Add Centos specific bootstrap files.

Add download and install script for rpms.
Add topology virl file for Centos.
Change VPP repo urls for centos.

JIRA: CSIT-356

Change-Id: I3a0a88958a712d1b652f19c76e5e1b019796d0ae
Signed-off-by: Thomas F Herbert <therbert@redhat.com>

8 files changed, 1215 insertions, 366 deletions

diff --git a/VPP_REPO_URL_CENTOS b/VPP_REPO_URL_CENTOS
new file mode 100644
index 0000000000..dde24ca407
--- /dev/null
+++ b/VPP_REPO_URL_CENTOS
@@ -0,0 +1 @@
+https://nexus.fd.io/content/repositories/fd.io.yum/
diff --git a/VPP_REPO_URL_UBUNTU b/VPP_REPO_URL_UBUNTU
new file mode 100644
index 0000000000..56de6b69e9
--- /dev/null
+++ b/VPP_REPO_URL_UBUNTU
@@ -0,0 +1 @@
+https://nexus.fd.io/content/repositories/fd.io.master.ubuntu.xenial.main/io/fd/vpp/
diff --git a/bootstrap-centos.sh b/bootstrap-centos.sh
new file mode 100755
index 0000000000..6f8fba00b6
--- /dev/null
+++ b/bootstrap-centos.sh
@@ -0,0 +1,388 @@
+#!/bin/bash
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -x
+
+cat /etc/hostname
+cat /etc/hosts
+
+sudo apt-get -y update
+sudo apt-get -y install libpython2.7-dev python-virtualenv
+
+VIRL_SERVERS=("10.30.51.28" "10.30.51.29" "10.30.51.30")
+
+VIRL_USERNAME=jenkins-in
+VIRL_PKEY=priv_key
+VIRL_SERVER_STATUS_FILE="status"
+VIRL_SERVER_EXPECTED_STATUS="PRODUCTION"
+
+VIRL_TOPOLOGY=double-ring-nested.centos7
+VIRL_RELEASE=csit-centos-7.3-1611
+
+SSH_OPTIONS="-i ${VIRL_PKEY} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o LogLevel=error"
+
+TEST_GROUPS=("l2bd,dhcp,gre,honeycomb,l2xc,lisp,softwire" "cop,telemetry,ipsec,ipv6,rpf,tap,vrf" "fds,iacl,ipv4,policer,vlan,vxlan")
+SUITE_PATH="tests.func"
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+# Create tmp dir
+mkdir ${SCRIPT_DIR}/tmp
+
+# Use tmp dir to store log files
+LOG_PATH="${SCRIPT_DIR}/tmp"
+
+# Use tmp dir for tarballs
+export TMPDIR="${SCRIPT_DIR}/tmp"
+
+SHARED_MEMORY_PATH="/run/shm"
+
+function ssh_do() {
+    echo
+    echo "### "  ssh $@
+    ssh ${SSH_OPTIONS} $@
+}
+
+rm -f ${VIRL_PKEY}
+cat > ${VIRL_PKEY} <<EOF
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+EOF
+chmod 600 ${VIRL_PKEY}
+
+#
+# Pick a random host from the array of VIRL servers for every test set run
+# and attempt to reach it and verify it's status.
+#
+# The server must be reachable and have a "status" file with
+# the content "PRODUCTION" to be selected.
+#
+# If the server is not reachable or does not have the correct
+# status remove it from the array and start again.
+#
+# Abort if there are no more servers left in the array.
+#
+for index in "${!TEST_GROUPS[@]}"; do
+    VIRL_SERVER[${index}]=""
+    while [[ ! "${VIRL_SERVER[${index}]}" ]]; do
+        num_hosts=${#VIRL_SERVERS[@]}
+        if [ $num_hosts == 0 ]
+        then
+            echo "No more VIRL candidate hosts available, failing."
+            exit 127
+        fi
+        element=$[ $RANDOM % $num_hosts ]
+        virl_server_candidate=${VIRL_SERVERS[$element]}
+        virl_server_status=$(ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${virl_server_candidate} cat $VIRL_SERVER_STATUS_FILE 2>&1)
+        echo VIRL HOST $virl_server_candidate status is \"$virl_server_status\"
+        if [ "$virl_server_status" == "$VIRL_SERVER_EXPECTED_STATUS" ]
+        then
+            # Candidate is in good status. Select this server.
+            VIRL_SERVER[${index}]="$virl_server_candidate"
+        else
+            # Candidate is in bad status. Remove from array.
+            VIRL_SERVERS=("${VIRL_SERVERS[@]:0:$element}" "${VIRL_SERVERS[@]:$[$element+1]}")
+        fi
+    done
+done
+
+echo "Selected VIRL servers: ${VIRL_SERVER[@]}"
+
+# Temporarily download VPP packages from nexus.fd.io
+if [ "${#}" -ne "0" ]; then
+    arr=(${@})
+    echo ${arr[0]}
+    # DPDK is not part of the vpp build
+    DPDK_STABLE_VER=$(cat ${SCRIPT_DIR}/DPDK_STABLE_VER)
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dkms/${DPDK_STABLE_VER}/vpp-dpdk-dkms-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+else
+    rm -f *.rpm
+    DPDK_STABLE_VER=$(cat ${SCRIPT_DIR}/DPDK_STABLE_VER)
+    VPP_STABLE_VER=$(cat ${SCRIPT_DIR}/VPP_STABLE_VER)
+    VPP_REPO_URL=$(cat ${SCRIPT_DIR}/VPP_REPO_URL_CENTOS)
+    VPP_CLASSIFIER="-rpm"
+    wget -q "${VPP_REPO_URL}/vpp/${VPP_STABLE_VER}/vpp-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dbg/${VPP_STABLE_VER}/vpp-dbg-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dev/${VPP_STABLE_VER}/vpp-dev-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-lib/${VPP_STABLE_VER}/vpp-lib-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+    wget -q "${VPP_REPO_URL}/vpp-plugins/${VPP_STABLE_VER}/vpp-plugins-${VPP_STABLE_VER}${VPP_CLASSIFIER}.rpm" || exit
+fi
+
+VPP_RPMS=(*.rpm)
+echo ${VPP_RPMS[@]}
+VIRL_DIR_LOC="/tmp"
+VPP_RPMS_FULL=(${VPP_RPMS[@]})
+
+# Prepend directory location at remote host to rpm list
+for index in "${!VPP_RPMS_FULL[@]}"; do
+    VPP_RPMS_FULL[${index}]=${VIRL_DIR_LOC}/${VPP_RPMS_FULL[${index}]}
+done
+
+echo "Updated file names: " ${VPP_RPMS_FULL[@]}
+
+cat ${VIRL_PKEY}
+
+# Copy the files to VIRL hosts
+DONE=""
+for index in "${!VIRL_SERVER[@]}"; do
+    # Do not copy files in case they have already been copied to the VIRL host
+    [[ "${DONE[@]}" =~ "${VIRL_SERVER[${index}]}" ]] && copy=0 || copy=1
+
+    if [ "${copy}" -eq "0" ]; then
+        echo "VPP rpms have already been copied to the VIRL host ${VIRL_SERVER[${index}]}"
+    else
+        scp ${SSH_OPTIONS} *.rpm \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:${VIRL_DIR_LOC}/
+
+        result=$?
+        if [ "${result}" -ne "0" ]; then
+            echo "Failed to copy VPP rpms to VIRL host ${VIRL_SERVER[${index}]}"
+            echo ${result}
+            exit ${result}
+        else
+            echo "VPP rpms successfully copied to the VIRL host ${VIRL_SERVER[${index}]}"
+        fi
+        DONE+=(${VIRL_SERVER[${index}]})
+    fi
+done
+
+# Start a simulation on VIRL server
+
+function stop_virl_simulation {
+    for index in "${!VIRL_SERVER[@]}"; do
+        ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
+            "stop-testcase ${VIRL_SID[${index}]}"
+    done
+}
+
+# Upon script exit, cleanup the simulation execution
+trap stop_virl_simulation EXIT
+
+for index in "${!VIRL_SERVER[@]}"; do
+    echo "Starting simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
+    VIRL_SID[${index}]=$(ssh ${SSH_OPTIONS} \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]} \
+        "start-testcase -c ${VIRL_TOPOLOGY} -r ${VIRL_RELEASE} ${VPP_RPMS_FULL[@]}")
+    retval=$?
+    if [ ${retval} -ne "0" ]; then
+        echo "VIRL simulation start failed on ${VIRL_SERVER[${index}]}"
+        exit ${retval}
+    fi
+    if [[ ! "${VIRL_SID[${index}]}" =~ session-[a-zA-Z0-9_]{6} ]]; then
+        echo "No VIRL session ID reported."
+        exit 127
+    fi
+    echo "VIRL simulation started on ${VIRL_SERVER[${index}]}"
+
+    ssh_do ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
+     cat /scratch/${VIRL_SID[${index}]}/topology.yaml
+
+    # Download the topology file from VIRL session and rename it
+    scp ${SSH_OPTIONS} \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:/scratch/${VIRL_SID[${index}]}/topology.yaml \
+        topologies/enabled/topology${index}.yaml
+
+    retval=$?
+    if [ ${retval} -ne "0" ]; then
+        echo "Failed to copy topology file from VIRL simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
+        exit ${retval}
+    fi
+done
+
+echo ${VIRL_SID[@]}
+
+virtualenv --system-site-packages env
+. env/bin/activate
+
+echo pip install
+pip install -r ${SCRIPT_DIR}/requirements.txt
+
+for index in "${!VIRL_SERVER[@]}"; do
+    pykwalify -s ${SCRIPT_DIR}/resources/topology_schemas/3_node_topology.sch.yaml \
+              -s ${SCRIPT_DIR}/resources/topology_schemas/topology.sch.yaml \
+              -d ${SCRIPT_DIR}/topologies/enabled/topology${index}.yaml \
+              -vvv
+    if [ "$?" -ne "0" ]; then
+        echo "Topology${index} schema validation failed."
+        echo "However, the tests will start."
+    fi
+done
+
+function run_test_set() {
+    set +x
+    OLDIFS=$IFS
+    IFS=","
+    nr=$(echo $1)
+    rm -f ${LOG_PATH}/test_run${nr}.log
+    exec &> >(while read line; do echo "$(date +'%H:%M:%S') $line" \
+     >> ${LOG_PATH}/test_run${nr}.log; done;)
+    suite_str=""
+    for suite in ${TEST_GROUPS[${nr}]}; do
+        suite_str="${suite_str} --suite ${SUITE_PATH}.${suite}"
+    done
+    IFS=$OLDIFS
+
+    echo "PYTHONPATH=`pwd` pybot -L TRACE -W 136\
+        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
+        ${suite_str} \
+        --include vm_envAND3_node_single_link_topo \
+        --include vm_envAND3_node_double_link_topo \
+        --exclude PERFTEST \
+        --exclude SKIP_PATCH \
+        --noncritical EXPECTED_FAILING \
+        --output ${LOG_PATH}/log_test_set_run${nr} \
+        tests/"
+
+    PYTHONPATH=`pwd` pybot -L TRACE -W 136\
+        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
+        ${suite_str} \
+        --include vm_envAND3_node_single_link_topo \
+        --include vm_envAND3_node_double_link_topo \
+        --exclude PERFTEST \
+        --exclude SKIP_PATCH \
+        --noncritical EXPECTED_FAILING \
+        --output ${LOG_PATH}/log_test_set_run${nr} \
+        tests/
+
+    local_run_rc=$?
+    echo ${local_run_rc} > ${SHARED_MEMORY_PATH}/rc_test_run${nr}
+    set -x
+}
+
+set +x
+# Send to background an instance of the run_test_set() function for each number,
+# record the pid.
+for index in "${!VIRL_SERVER[@]}"; do
+    run_test_set ${index} &
+    pid=$!
+    echo "Sent to background: Test_set${index} (pid=$pid)"
+    pids[$pid]=$index
+done
+
+echo
+echo -n "Waiting..."
+
+# Watch the stable of background processes.
+# If a pid goes away, remove it from the array.
+while [ -n "${pids[*]}" ]; do
+    for i in $(seq 0 9); do
+        sleep 1
+        echo -n "."
+    done
+    for pid in "${!pids[@]}"; do
+        if ! ps "$pid" >/dev/null; then
+            echo -e "\n"
+            echo "Test_set${pids[$pid]} with PID $pid finished."
+            unset pids[$pid]
+        fi
+    done
+    if [ -z "${!pids[*]}" ]; then
+        break
+    fi
+    echo -n -e "\nStill waiting for test set(s): ${pids[*]} ..."
+done
+
+echo
+echo "All test set runs finished."
+echo
+
+set -x
+
+RC=0
+for index in "${!VIRL_SERVER[@]}"; do
+    echo "Test_set${index} log:"
+    cat ${LOG_PATH}/test_run${index}.log
+    RC_PARTIAL_RUN=$(cat ${SHARED_MEMORY_PATH}/rc_test_run${index})
+    RC=$((RC+RC_PARTIAL_RUN))
+    rm -f ${SHARED_MEMORY_PATH}/rc_test_run${index}
+    rm -f ${LOG_PATH}/test_run${index}.log
+    echo
+done
+
+# Log the final result
+if [ "${RC}" -eq "0" ]; then
+    set +x
+    echo
+    echo "========================================================================================================================================"
+    echo "Final result of all test loops:                                                                                                 | PASS |"
+    echo "All critical tests have passed."
+    echo "========================================================================================================================================"
+    echo
+    set -x
+else
+    if [ "${RC}" -eq "1" ]; then
+        HLP_STR="test has"
+    else
+        HLP_STR="tests have"
+    fi
+    set +x
+    echo
+    echo "========================================================================================================================================"
+    echo "Final result of all test loops:                                                                                                 | FAIL |"
+    echo "${RC} critical ${HLP_STR} failed."
+    echo "========================================================================================================================================"
+    echo
+    set -x
+fi
+
+echo Post-processing test data...
+
+partial_logs=""
+for index in "${!VIRL_SERVER[@]}"; do
+    partial_logs="${partial_logs} ${LOG_PATH}/log_test_set_run${index}.xml"
+done
+
+# Rebot output post-processing
+rebot --noncritical EXPECTED_FAILING \
+      --output output.xml ${partial_logs}
+
+# Remove unnecessary log files
+rm -f ${partial_logs}
+
+echo Post-processing finished.
+
+if [ ${RC} -eq 0 ]; then
+    RETURN_STATUS=0
+else
+    RETURN_STATUS=1
+fi
+
+exit ${RETURN_STATUS}
diff --git a/bootstrap-ubuntu.sh b/bootstrap-ubuntu.sh
new file mode 100755
index 0000000000..7eeb68113c
--- /dev/null
+++ b/bootstrap-ubuntu.sh
@@ -0,0 +1,389 @@
+#!/bin/bash
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -x
+
+cat /etc/hostname
+cat /etc/hosts
+
+export DEBIAN_FRONTEND=noninteractive
+sudo apt-get -y update
+sudo apt-get -y install libpython2.7-dev python-virtualenv
+
+VIRL_SERVERS=("10.30.51.28" "10.30.51.29" "10.30.51.30")
+
+VIRL_USERNAME=jenkins-in
+VIRL_PKEY=priv_key
+VIRL_SERVER_STATUS_FILE="status"
+VIRL_SERVER_EXPECTED_STATUS="PRODUCTION"
+
+VIRL_TOPOLOGY=double-ring-nested.xenial
+VIRL_RELEASE=csit-ubuntu-16.04.1_2016-12-19_1.6
+
+SSH_OPTIONS="-i ${VIRL_PKEY} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o LogLevel=error"
+
+TEST_GROUPS=("l2bd,dhcp,gre,honeycomb,l2xc,lisp,softwire" "cop,telemetry,ipsec,ipv6,rpf,tap,vrf" "fds,iacl,ipv4,policer,vlan,vxlan")
+SUITE_PATH="tests.func"
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+# Create tmp dir
+mkdir ${SCRIPT_DIR}/tmp
+
+# Use tmp dir to store log files
+LOG_PATH="${SCRIPT_DIR}/tmp"
+
+# Use tmp dir for tarballs
+export TMPDIR="${SCRIPT_DIR}/tmp"
+
+SHARED_MEMORY_PATH="/run/shm"
+
+function ssh_do() {
+    echo
+    echo "### "  ssh $@
+    ssh ${SSH_OPTIONS} $@
+}
+
+rm -f ${VIRL_PKEY}
+cat > ${VIRL_PKEY} <<EOF
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+EOF
+chmod 600 ${VIRL_PKEY}
+
+#
+# Pick a random host from the array of VIRL servers for every test set run
+# and attempt to reach it and verify it's status.
+#
+# The server must be reachable and have a "status" file with
+# the content "PRODUCTION" to be selected.
+#
+# If the server is not reachable or does not have the correct
+# status remove it from the array and start again.
+#
+# Abort if there are no more servers left in the array.
+#
+for index in "${!TEST_GROUPS[@]}"; do
+    VIRL_SERVER[${index}]=""
+    while [[ ! "${VIRL_SERVER[${index}]}" ]]; do
+        num_hosts=${#VIRL_SERVERS[@]}
+        if [ $num_hosts == 0 ]
+        then
+            echo "No more VIRL candidate hosts available, failing."
+            exit 127
+        fi
+        element=$[ $RANDOM % $num_hosts ]
+        virl_server_candidate=${VIRL_SERVERS[$element]}
+        virl_server_status=$(ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${virl_server_candidate} cat $VIRL_SERVER_STATUS_FILE 2>&1)
+        echo VIRL HOST $virl_server_candidate status is \"$virl_server_status\"
+        if [ "$virl_server_status" == "$VIRL_SERVER_EXPECTED_STATUS" ]
+        then
+            # Candidate is in good status. Select this server.
+            VIRL_SERVER[${index}]="$virl_server_candidate"
+        else
+            # Candidate is in bad status. Remove from array.
+            VIRL_SERVERS=("${VIRL_SERVERS[@]:0:$element}" "${VIRL_SERVERS[@]:$[$element+1]}")
+        fi
+    done
+done
+
+echo "Selected VIRL servers: ${VIRL_SERVER[@]}"
+
+# Temporarily download VPP and DPDK packages from nexus.fd.io
+DPDK_STABLE_VER=$(cat ${SCRIPT_DIR}/DPDK_STABLE_VER)
+VPP_REPO_URL=$(cat ${SCRIPT_DIR}/VPP_REPO_URL)
+VPP_CLASSIFIER="-deb"
+if [ "${#}" -ne "0" ]; then
+    arr=(${@})
+    echo ${arr[0]}
+    # DPDK is not part of the vpp build
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dkms/${DPDK_STABLE_VER}/vpp-dpdk-dkms-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+else
+    rm -f *.deb
+    VPP_STABLE_VER=$(cat ${SCRIPT_DIR}/VPP_STABLE_VER)
+    wget -q "${VPP_REPO_URL}/vpp/${VPP_STABLE_VER}/vpp-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dbg/${VPP_STABLE_VER}/vpp-dbg-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dev/${VPP_STABLE_VER}/vpp-dev-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-dpdk-dkms/${DPDK_STABLE_VER}/vpp-dpdk-dkms-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-lib/${VPP_STABLE_VER}/vpp-lib-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+    wget -q "${VPP_REPO_URL}/vpp-plugins/${VPP_STABLE_VER}/vpp-plugins-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
+fi
+
+VPP_DEBS=(*.deb)
+echo ${VPP_DEBS[@]}
+VIRL_DIR_LOC="/tmp"
+VPP_DEBS_FULL=(${VPP_DEBS[@]})
+
+# Prepend directory location at remote host to deb file list
+for index in "${!VPP_DEBS_FULL[@]}"; do
+    VPP_DEBS_FULL[${index}]=${VIRL_DIR_LOC}/${VPP_DEBS_FULL[${index}]}
+done
+
+echo "Updated file names: " ${VPP_DEBS_FULL[@]}
+
+cat ${VIRL_PKEY}
+
+# Copy the files to VIRL hosts
+DONE=""
+for index in "${!VIRL_SERVER[@]}"; do
+    # Do not copy files in case they have already been copied to the VIRL host
+    [[ "${DONE[@]}" =~ "${VIRL_SERVER[${index}]}" ]] && copy=0 || copy=1
+
+    if [ "${copy}" -eq "0" ]; then
+        echo "VPP deb files have already been copied to the VIRL host ${VIRL_SERVER[${index}]}"
+    else
+        scp ${SSH_OPTIONS} *.deb \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:${VIRL_DIR_LOC}/
+
+        result=$?
+        if [ "${result}" -ne "0" ]; then
+            echo "Failed to copy VPP deb files to VIRL host ${VIRL_SERVER[${index}]}"
+            echo ${result}
+            exit ${result}
+        else
+            echo "VPP deb files successfully copied to the VIRL host ${VIRL_SERVER[${index}]}"
+        fi
+        DONE+=(${VIRL_SERVER[${index}]})
+    fi
+done
+
+# Start a simulation on VIRL server
+
+function stop_virl_simulation {
+    for index in "${!VIRL_SERVER[@]}"; do
+        ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
+            "stop-testcase ${VIRL_SID[${index}]}"
+    done
+}
+
+# Upon script exit, cleanup the simulation execution
+trap stop_virl_simulation EXIT
+
+for index in "${!VIRL_SERVER[@]}"; do
+    echo "Starting simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
+    VIRL_SID[${index}]=$(ssh ${SSH_OPTIONS} \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]} \
+        "start-testcase -c ${VIRL_TOPOLOGY} -r ${VIRL_RELEASE} ${VPP_DEBS_FULL[@]}")
+    retval=$?
+    if [ ${retval} -ne "0" ]; then
+        echo "VIRL simulation start failed on ${VIRL_SERVER[${index}]}"
+        exit ${retval}
+    fi
+    if [[ ! "${VIRL_SID[${index}]}" =~ session-[a-zA-Z0-9_]{6} ]]; then
+        echo "No VIRL session ID reported."
+        exit 127
+    fi
+    echo "VIRL simulation started on ${VIRL_SERVER[${index}]}"
+
+    ssh_do ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
+     cat /scratch/${VIRL_SID[${index}]}/topology.yaml
+
+    # Download the topology file from VIRL session and rename it
+    scp ${SSH_OPTIONS} \
+        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:/scratch/${VIRL_SID[${index}]}/topology.yaml \
+        topologies/enabled/topology${index}.yaml
+
+    retval=$?
+    if [ ${retval} -ne "0" ]; then
+        echo "Failed to copy topology file from VIRL simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
+        exit ${retval}
+    fi
+done
+
+echo ${VIRL_SID[@]}
+
+virtualenv --system-site-packages env
+. env/bin/activate
+
+echo pip install
+pip install -r ${SCRIPT_DIR}/requirements.txt
+
+for index in "${!VIRL_SERVER[@]}"; do
+    pykwalify -s ${SCRIPT_DIR}/resources/topology_schemas/3_node_topology.sch.yaml \
+              -s ${SCRIPT_DIR}/resources/topology_schemas/topology.sch.yaml \
+              -d ${SCRIPT_DIR}/topologies/enabled/topology${index}.yaml \
+              -vvv
+    if [ "$?" -ne "0" ]; then
+        echo "Topology${index} schema validation failed."
+        echo "However, the tests will start."
+    fi
+done
+
+function run_test_set() {
+    set +x
+    OLDIFS=$IFS
+    IFS=","
+    nr=$(echo $1)
+    rm -f ${LOG_PATH}/test_run${nr}.log
+    exec &> >(while read line; do echo "$(date +'%H:%M:%S') $line" \
+     >> ${LOG_PATH}/test_run${nr}.log; done;)
+    suite_str=""
+    for suite in ${TEST_GROUPS[${nr}]}; do
+        suite_str="${suite_str} --suite ${SUITE_PATH}.${suite}"
+    done
+    IFS=$OLDIFS
+
+    echo "PYTHONPATH=`pwd` pybot -L TRACE -W 136\
+        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
+        ${suite_str} \
+        --include vm_envAND3_node_single_link_topo \
+        --include vm_envAND3_node_double_link_topo \
+        --exclude PERFTEST \
+        --exclude SKIP_PATCH \
+        --noncritical EXPECTED_FAILING \
+        --output ${LOG_PATH}/log_test_set_run${nr} \
+        tests/"
+
+    PYTHONPATH=`pwd` pybot -L TRACE -W 136\
+        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
+        ${suite_str} \
+        --include vm_envAND3_node_single_link_topo \
+        --include vm_envAND3_node_double_link_topo \
+        --exclude PERFTEST \
+        --exclude SKIP_PATCH \
+        --noncritical EXPECTED_FAILING \
+        --output ${LOG_PATH}/log_test_set_run${nr} \
+        tests/
+
+    local_run_rc=$?
+    echo ${local_run_rc} > ${SHARED_MEMORY_PATH}/rc_test_run${nr}
+    set -x
+}
+
+set +x
+# Send to background an instance of the run_test_set() function for each number,
+# record the pid.
+for index in "${!VIRL_SERVER[@]}"; do
+    run_test_set ${index} &
+    pid=$!
+    echo "Sent to background: Test_set${index} (pid=$pid)"
+    pids[$pid]=$index
+done
+
+echo
+echo -n "Waiting..."
+
+# Watch the stable of background processes.
+# If a pid goes away, remove it from the array.
+while [ -n "${pids[*]}" ]; do
+    for i in $(seq 0 9); do
+        sleep 1
+        echo -n "."
+    done
+    for pid in "${!pids[@]}"; do
+        if ! ps "$pid" >/dev/null; then
+            echo -e "\n"
+            echo "Test_set${pids[$pid]} with PID $pid finished."
+            unset pids[$pid]
+        fi
+    done
+    if [ -z "${!pids[*]}" ]; then
+        break
+    fi
+    echo -n -e "\nStill waiting for test set(s): ${pids[*]} ..."
+done
+
+echo
+echo "All test set runs finished."
+echo
+
+set -x
+
+RC=0
+for index in "${!VIRL_SERVER[@]}"; do
+    echo "Test_set${index} log:"
+    cat ${LOG_PATH}/test_run${index}.log
+    RC_PARTIAL_RUN=$(cat ${SHARED_MEMORY_PATH}/rc_test_run${index})
+    RC=$((RC+RC_PARTIAL_RUN))
+    rm -f ${SHARED_MEMORY_PATH}/rc_test_run${index}
+    rm -f ${LOG_PATH}/test_run${index}.log
+    echo
+done
+
+# Log the final result
+if [ "${RC}" -eq "0" ]; then
+    set +x
+    echo
+    echo "========================================================================================================================================"
+    echo "Final result of all test loops:                                                                                                 | PASS |"
+    echo "All critical tests have passed."
+    echo "========================================================================================================================================"
+    echo
+    set -x
+else
+    if [ "${RC}" -eq "1" ]; then
+        HLP_STR="test has"
+    else
+        HLP_STR="tests have"
+    fi
+    set +x
+    echo
+    echo "========================================================================================================================================"
+    echo "Final result of all test loops:                                                                                                 | FAIL |"
+    echo "${RC} critical ${HLP_STR} failed."
+    echo "========================================================================================================================================"
+    echo
+    set -x
+fi
+
+echo Post-processing test data...
+
+partial_logs=""
+for index in "${!VIRL_SERVER[@]}"; do
+    partial_logs="${partial_logs} ${LOG_PATH}/log_test_set_run${index}.xml"
+done
+
+# Rebot output post-processing
+rebot --noncritical EXPECTED_FAILING \
+      --output output.xml ${partial_logs}
+
+# Remove unnecessary log files
+rm -f ${partial_logs}
+
+echo Post-processing finished.
+
+if [ ${RC} -eq 0 ]; then
+    RETURN_STATUS=0
+else
+    RETURN_STATUS=1
+fi
+
+exit ${RETURN_STATUS}
diff --git a/bootstrap.sh b/bootstrap.sh
index 7eeb68113c..a3d18e5637 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -17,373 +17,10 @@ set -x
 cat /etc/hostname
 cat /etc/hosts
 
-export DEBIAN_FRONTEND=noninteractive
-sudo apt-get -y update
-sudo apt-get -y install libpython2.7-dev python-virtualenv
-
-VIRL_SERVERS=("10.30.51.28" "10.30.51.29" "10.30.51.30")
-
-VIRL_USERNAME=jenkins-in
-VIRL_PKEY=priv_key
-VIRL_SERVER_STATUS_FILE="status"
-VIRL_SERVER_EXPECTED_STATUS="PRODUCTION"
-
-VIRL_TOPOLOGY=double-ring-nested.xenial
-VIRL_RELEASE=csit-ubuntu-16.04.1_2016-12-19_1.6
-
-SSH_OPTIONS="-i ${VIRL_PKEY} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o LogLevel=error"
-
-TEST_GROUPS=("l2bd,dhcp,gre,honeycomb,l2xc,lisp,softwire" "cop,telemetry,ipsec,ipv6,rpf,tap,vrf" "fds,iacl,ipv4,policer,vlan,vxlan")
-SUITE_PATH="tests.func"
-
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-# Create tmp dir
-mkdir ${SCRIPT_DIR}/tmp
-
-# Use tmp dir to store log files
-LOG_PATH="${SCRIPT_DIR}/tmp"
-
-# Use tmp dir for tarballs
-export TMPDIR="${SCRIPT_DIR}/tmp"
-
-SHARED_MEMORY_PATH="/run/shm"
-
-function ssh_do() {
-    echo
-    echo "### "  ssh $@
-    ssh ${SSH_OPTIONS} $@
-}
-
-rm -f ${VIRL_PKEY}
-cat > ${VIRL_PKEY} <<EOF
------BEGIN RSA PRIVATE KEY-----
-MIIEpQIBAAKCAQEA+IHXq87GcqMR1C47rzx6Cbip5Ghq8pKrbqKrP5Nf41HcYrT6
-GOXl9nFWKsMOzIlIn+8y7Il27eZh7csQGApbg8QLiHMtcYEmWNzKZpkqg4nuAPxX
-VXwlKgnKX902SrET9Gp9TDayiHtCRWVfrlPPPSA0UEXW6BjLN/uHJ+W/Xzrrab+9
-asBVa05vT2W6n0KJ66zfCaeDM912mQ6SttscAwFoWDmdHlegiVqrlIG2ABxOvxxz
-L3dM3iSmlmQlzv9bThjo+nI4KFYh6m5wrZmAo5r/4q9CIJc21HVnTqkGOWJIZz6J
-73lePJVSq5gYqaoGw3swFEA/MDkOx7baWKSoLQIDAQABAoIBAQCNBeolNp+JWJ76
-gQ4fwLsknyXSV6sxYyhkDW4PEwwcTU06uqce0AAzXVffxne0fMe48x47+zqBgPbb
-4huM+Pu8B9nfojUMr5TaYtl9Zbgpk3F8H7dT7LKOa6XrxvZTZrADSRc30+Z26zPN
-e9zTaf42Gvt0/l0Zs1BHwbaOXqO+XuwJ3/F9Sf3PQYWXD3EOWjpHDP/X/1vAs6lV
-SLkm6J/9KKE1m6I6LTYjIXuYt4SXybW6N2TSy54hhQtYcDUnIU2hR/PHVWKrGA0J
-kELgrtTNTdbML27O5gFWU4PLUEYTZ9fN11D6qUZKxLcPOiPPHXkiILMRCCnG5DYI
-ksBAU/YlAoGBAPxZO9VO18TYc8THV1nLKcvT2+1oSs1UcA2wNQMU55t910ZYinRa
-MRwUhMOf8Mv5wOeiZaRICQB1PnVWtDVmGECgPpK6jUxqAwn8rgJcnoafLGL5YKMY
-RVafTe6N5LXgCaOcJrk21wxs6v7ninEbUxxc575urOvZMBkymDw91dwbAoGBAPwa
-YRhKhrzFKZzdK0RadVjnxKvolUllpoqqg3XuvmeAJHAOAnaOgVWq68NAcp5FZJv0
-2D2Up7TX8pjf9MofP1SJbcraKBpK4NzfNkA0dSdEi+FhVofAJ9umB2o5LW1n7sab
-UIrjsdzSJK/9Zb9yTTHPyibYzNEgaJV1HsbxfEFXAoGAYO2RmvRm0phll18OQVJV
-IpKk9kLKAKZ/R/K32hAsikBC8SVPQTPniyaifFWx81diblalff2hX4ipTf7Yx24I
-wMIMZuW7Im/R7QMef4+94G3Bad7p7JuE/qnAEHJ2OBnu+eYfxaK35XDsrq6XMazS
-NqHE7hOq3giVfgg+C12hCKMCgYEAtu9dbYcG5owbehxzfRI2/OCRsjz/t1bv1seM
-xVMND4XI6xb/apBWAZgZpIFrqrWoIBM3ptfsKipZe91ngBPUnL9s0Dolx452RVAj
-yctHB8uRxWYgqDkjsxtzXf1HnZBBkBS8CUzYj+hdfuddoeKLaY3invXLCiV+PpXS
-U4KAK9kCgYEAtSv0m5+Fg74BbAiFB6kCh11FYkW94YI6B/E2D/uVTD5dJhyEUFgZ
-cWsudXjMki8734WSpMBqBp/J8wG3C9ZS6IpQD+U7UXA+roB7Qr+j4TqtWfM+87Rh
-maOpG56uAyR0w5Z9BhwzA3VakibVk9KwDgZ29WtKFzuATLFnOtCS46E=
------END RSA PRIVATE KEY-----
-EOF
-chmod 600 ${VIRL_PKEY}
-
-#
-# Pick a random host from the array of VIRL servers for every test set run
-# and attempt to reach it and verify it's status.
-#
-# The server must be reachable and have a "status" file with
-# the content "PRODUCTION" to be selected.
-#
-# If the server is not reachable or does not have the correct
-# status remove it from the array and start again.
-#
-# Abort if there are no more servers left in the array.
-#
-for index in "${!TEST_GROUPS[@]}"; do
-    VIRL_SERVER[${index}]=""
-    while [[ ! "${VIRL_SERVER[${index}]}" ]]; do
-        num_hosts=${#VIRL_SERVERS[@]}
-        if [ $num_hosts == 0 ]
-        then
-            echo "No more VIRL candidate hosts available, failing."
-            exit 127
-        fi
-        element=$[ $RANDOM % $num_hosts ]
-        virl_server_candidate=${VIRL_SERVERS[$element]}
-        virl_server_status=$(ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${virl_server_candidate} cat $VIRL_SERVER_STATUS_FILE 2>&1)
-        echo VIRL HOST $virl_server_candidate status is \"$virl_server_status\"
-        if [ "$virl_server_status" == "$VIRL_SERVER_EXPECTED_STATUS" ]
-        then
-            # Candidate is in good status. Select this server.
-            VIRL_SERVER[${index}]="$virl_server_candidate"
-        else
-            # Candidate is in bad status. Remove from array.
-            VIRL_SERVERS=("${VIRL_SERVERS[@]:0:$element}" "${VIRL_SERVERS[@]:$[$element+1]}")
-        fi
-    done
-done
-
-echo "Selected VIRL servers: ${VIRL_SERVER[@]}"
-
-# Temporarily download VPP and DPDK packages from nexus.fd.io
-DPDK_STABLE_VER=$(cat ${SCRIPT_DIR}/DPDK_STABLE_VER)
-VPP_REPO_URL=$(cat ${SCRIPT_DIR}/VPP_REPO_URL)
-VPP_CLASSIFIER="-deb"
-if [ "${#}" -ne "0" ]; then
-    arr=(${@})
-    echo ${arr[0]}
-    # DPDK is not part of the vpp build
-    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-dpdk-dkms/${DPDK_STABLE_VER}/vpp-dpdk-dkms-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-else
-    rm -f *.deb
-    VPP_STABLE_VER=$(cat ${SCRIPT_DIR}/VPP_STABLE_VER)
-    wget -q "${VPP_REPO_URL}/vpp/${VPP_STABLE_VER}/vpp-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-dbg/${VPP_STABLE_VER}/vpp-dbg-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-dev/${VPP_STABLE_VER}/vpp-dev-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-dpdk-dev/${DPDK_STABLE_VER}/vpp-dpdk-dev-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-dpdk-dkms/${DPDK_STABLE_VER}/vpp-dpdk-dkms-${DPDK_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-lib/${VPP_STABLE_VER}/vpp-lib-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-    wget -q "${VPP_REPO_URL}/vpp-plugins/${VPP_STABLE_VER}/vpp-plugins-${VPP_STABLE_VER}${VPP_CLASSIFIER}.deb" || exit
-fi
-
-VPP_DEBS=(*.deb)
-echo ${VPP_DEBS[@]}
-VIRL_DIR_LOC="/tmp"
-VPP_DEBS_FULL=(${VPP_DEBS[@]})
-
-# Prepend directory location at remote host to deb file list
-for index in "${!VPP_DEBS_FULL[@]}"; do
-    VPP_DEBS_FULL[${index}]=${VIRL_DIR_LOC}/${VPP_DEBS_FULL[${index}]}
-done
-
-echo "Updated file names: " ${VPP_DEBS_FULL[@]}
-
-cat ${VIRL_PKEY}
-
-# Copy the files to VIRL hosts
-DONE=""
-for index in "${!VIRL_SERVER[@]}"; do
-    # Do not copy files in case they have already been copied to the VIRL host
-    [[ "${DONE[@]}" =~ "${VIRL_SERVER[${index}]}" ]] && copy=0 || copy=1
-
-    if [ "${copy}" -eq "0" ]; then
-        echo "VPP deb files have already been copied to the VIRL host ${VIRL_SERVER[${index}]}"
-    else
-        scp ${SSH_OPTIONS} *.deb \
-        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:${VIRL_DIR_LOC}/
-
-        result=$?
-        if [ "${result}" -ne "0" ]; then
-            echo "Failed to copy VPP deb files to VIRL host ${VIRL_SERVER[${index}]}"
-            echo ${result}
-            exit ${result}
-        else
-            echo "VPP deb files successfully copied to the VIRL host ${VIRL_SERVER[${index}]}"
-        fi
-        DONE+=(${VIRL_SERVER[${index}]})
-    fi
-done
-
-# Start a simulation on VIRL server
-
-function stop_virl_simulation {
-    for index in "${!VIRL_SERVER[@]}"; do
-        ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
-            "stop-testcase ${VIRL_SID[${index}]}"
-    done
-}
-
-# Upon script exit, cleanup the simulation execution
-trap stop_virl_simulation EXIT
-
-for index in "${!VIRL_SERVER[@]}"; do
-    echo "Starting simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
-    VIRL_SID[${index}]=$(ssh ${SSH_OPTIONS} \
-        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]} \
-        "start-testcase -c ${VIRL_TOPOLOGY} -r ${VIRL_RELEASE} ${VPP_DEBS_FULL[@]}")
-    retval=$?
-    if [ ${retval} -ne "0" ]; then
-        echo "VIRL simulation start failed on ${VIRL_SERVER[${index}]}"
-        exit ${retval}
-    fi
-    if [[ ! "${VIRL_SID[${index}]}" =~ session-[a-zA-Z0-9_]{6} ]]; then
-        echo "No VIRL session ID reported."
-        exit 127
-    fi
-    echo "VIRL simulation started on ${VIRL_SERVER[${index}]}"
-
-    ssh_do ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}\
-     cat /scratch/${VIRL_SID[${index}]}/topology.yaml
-
-    # Download the topology file from VIRL session and rename it
-    scp ${SSH_OPTIONS} \
-        ${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:/scratch/${VIRL_SID[${index}]}/topology.yaml \
-        topologies/enabled/topology${index}.yaml
-
-    retval=$?
-    if [ ${retval} -ne "0" ]; then
-        echo "Failed to copy topology file from VIRL simulation nr. ${index} on VIRL server ${VIRL_SERVER[${index}]}"
-        exit ${retval}
-    fi
-done
-
-echo ${VIRL_SID[@]}
-
-virtualenv --system-site-packages env
-. env/bin/activate
-
-echo pip install
-pip install -r ${SCRIPT_DIR}/requirements.txt
-
-for index in "${!VIRL_SERVER[@]}"; do
-    pykwalify -s ${SCRIPT_DIR}/resources/topology_schemas/3_node_topology.sch.yaml \
-              -s ${SCRIPT_DIR}/resources/topology_schemas/topology.sch.yaml \
-              -d ${SCRIPT_DIR}/topologies/enabled/topology${index}.yaml \
-              -vvv
-    if [ "$?" -ne "0" ]; then
-        echo "Topology${index} schema validation failed."
-        echo "However, the tests will start."
-    fi
-done
-
-function run_test_set() {
-    set +x
-    OLDIFS=$IFS
-    IFS=","
-    nr=$(echo $1)
-    rm -f ${LOG_PATH}/test_run${nr}.log
-    exec &> >(while read line; do echo "$(date +'%H:%M:%S') $line" \
-     >> ${LOG_PATH}/test_run${nr}.log; done;)
-    suite_str=""
-    for suite in ${TEST_GROUPS[${nr}]}; do
-        suite_str="${suite_str} --suite ${SUITE_PATH}.${suite}"
-    done
-    IFS=$OLDIFS
-
-    echo "PYTHONPATH=`pwd` pybot -L TRACE -W 136\
-        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
-        ${suite_str} \
-        --include vm_envAND3_node_single_link_topo \
-        --include vm_envAND3_node_double_link_topo \
-        --exclude PERFTEST \
-        --exclude SKIP_PATCH \
-        --noncritical EXPECTED_FAILING \
-        --output ${LOG_PATH}/log_test_set_run${nr} \
-        tests/"
-
-    PYTHONPATH=`pwd` pybot -L TRACE -W 136\
-        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology${nr}.yaml \
-        ${suite_str} \
-        --include vm_envAND3_node_single_link_topo \
-        --include vm_envAND3_node_double_link_topo \
-        --exclude PERFTEST \
-        --exclude SKIP_PATCH \
-        --noncritical EXPECTED_FAILING \
-        --output ${LOG_PATH}/log_test_set_run${nr} \
-        tests/
-
-    local_run_rc=$?
-    echo ${local_run_rc} > ${SHARED_MEMORY_PATH}/rc_test_run${nr}
-    set -x
-}
-
-set +x
-# Send to background an instance of the run_test_set() function for each number,
-# record the pid.
-for index in "${!VIRL_SERVER[@]}"; do
-    run_test_set ${index} &
-    pid=$!
-    echo "Sent to background: Test_set${index} (pid=$pid)"
-    pids[$pid]=$index
-done
-
-echo
-echo -n "Waiting..."
-
-# Watch the stable of background processes.
-# If a pid goes away, remove it from the array.
-while [ -n "${pids[*]}" ]; do
-    for i in $(seq 0 9); do
-        sleep 1
-        echo -n "."
-    done
-    for pid in "${!pids[@]}"; do
-        if ! ps "$pid" >/dev/null; then
-            echo -e "\n"
-            echo "Test_set${pids[$pid]} with PID $pid finished."
-            unset pids[$pid]
-        fi
-    done
-    if [ -z "${!pids[*]}" ]; then
-        break
-    fi
-    echo -n -e "\nStill waiting for test set(s): ${pids[*]} ..."
-done
-
-echo
-echo "All test set runs finished."
-echo
-
-set -x
-
-RC=0
-for index in "${!VIRL_SERVER[@]}"; do
-    echo "Test_set${index} log:"
-    cat ${LOG_PATH}/test_run${index}.log
-    RC_PARTIAL_RUN=$(cat ${SHARED_MEMORY_PATH}/rc_test_run${index})
-    RC=$((RC+RC_PARTIAL_RUN))
-    rm -f ${SHARED_MEMORY_PATH}/rc_test_run${index}
-    rm -f ${LOG_PATH}/test_run${index}.log
-    echo
-done
-
-# Log the final result
-if [ "${RC}" -eq "0" ]; then
-    set +x
-    echo
-    echo "========================================================================================================================================"
-    echo "Final result of all test loops:                                                                                                 | PASS |"
-    echo "All critical tests have passed."
-    echo "========================================================================================================================================"
-    echo
-    set -x
+if [ -f "/etc/redhat-release" ]; then
+    ${SCRIPT_DIR}/bootstrap-centos.sh
 else
-    if [ "${RC}" -eq "1" ]; then
-        HLP_STR="test has"
-    else
-        HLP_STR="tests have"
-    fi
-    set +x
-    echo
-    echo "========================================================================================================================================"
-    echo "Final result of all test loops:                                                                                                 | FAIL |"
-    echo "${RC} critical ${HLP_STR} failed."
-    echo "========================================================================================================================================"
-    echo
-    set -x
+    ${SCRIPT_DIR}/bootstrap-ubuntu.sh
 fi
-
-echo Post-processing test data...
-
-partial_logs=""
-for index in "${!VIRL_SERVER[@]}"; do
-    partial_logs="${partial_logs} ${LOG_PATH}/log_test_set_run${index}.xml"
-done
-
-# Rebot output post-processing
-rebot --noncritical EXPECTED_FAILING \
-      --output output.xml ${partial_logs}
-
-# Remove unnecessary log files
-rm -f ${partial_logs}
-
-echo Post-processing finished.
-
-if [ ${RC} -eq 0 ]; then
-    RETURN_STATUS=0
-else
-    RETURN_STATUS=1
-fi
-
-exit ${RETURN_STATUS}
diff --git a/resources/tools/download_install_vpp_rpms.sh b/resources/tools/download_install_vpp_rpms.sh
new file mode 100644
index 0000000000..29e09216db
--- /dev/null
+++ b/resources/tools/download_install_vpp_rpms.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+VER="RELEASE"
+
+VPP_REPO_URL_PATH="./VPP_REPO_URL"
+if [ -e "$VPP_REPO_URL_PATH" ]; then
+    VPP_REPO_URL=$(cat $VPP_REPO_URL_PATH)
+    REPO=$(echo ${VPP_REPO_URL#https://nexus.fd.io/content/repositories/})
+    REPO=$(echo ${REPO%/fd.io.centos7})
+else
+    REPO='https://nexus.fd.io/content/repositories/fd.io.centos7'
+fi
+
+ARTIFACTS="vpp vpp-lib vpp-debuginfo vpp-devel vpp-python-api vpp-plugins"
+
+
+yum-config-manager --add-repo $REPO
+
+if [ "$1" != "--skip-install" ]; then
+    echo Installing VPP
+    sudo yum install -y $ARTIFACTS
+else
+    echo VPP Installation skipped
+fi
diff --git a/resources/tools/virl/topologies/double-ring-nested.centos7.virl b/resources/tools/virl/topologies/double-ring-nested.centos7.virl
new file mode 100644
index 0000000000..4a88e8377b
--- /dev/null
+++ b/resources/tools/virl/topologies/double-ring-nested.centos7.virl
@@ -0,0 +1,299 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<topology xmlns="http://www.cisco.com/VIRL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" schemaVersion="0.9" xsi:schemaLocation="http://www.cisco.com/VIRL https://raw.github.com/CiscoVIRL/schema/v0.9/virl.xsd">
+    <extensions>
+        <entry key="management_network" type="String">flat</entry>
+    </extensions>
+    <node name="tg1" type="SIMPLE" subtype="server" location="570,238" vmImage="$$VM_IMAGE$$">
+        <extensions>
+            <entry key="config" type="String">#cloud-config
+bootcmd:
+- ln -s -t /etc/rc.d /etc/rc.local
+hostname: tg1
+manage_etc_hosts: true
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:
+- systemctl enable serial-getty-digi@ttyS0.service
+- systemctl start serial-getty-digi@ttyS0.service
+- systemctl start rc-local
+- touch /tmp/before-sed
+- sed -i 's/^\s*PasswordAuthentication\s\+no/PasswordAuthentication yes/' /etc/ssh/sshd_config
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config
+- service ssh restart
+- service sshd restart
+users:
+- default
+- gecos: User configured by VIRL Configuration Engine 0.21.4
+  lock-passwd: false
+  name: cisco
+  plain-text-passwd: cisco
+  shell: /bin/bash
+  ssh-authorized-keys:
+  - VIRL-USER-SSH-PUBLIC-KEY
+  - VIRL-USER-SSH-PUBLIC-KEY
+  sudo: ALL=(ALL) NOPASSWD:ALL
+write_files:
+- path: /usr/local/sbin/cloud-instance-name
+  content: |
+    #!/usr/bin/python3.5
+    import pickle
+    print(pickle.loads(open('/var/lib/cloud/instance/obj.pkl', 'rb').read(), encoding="ACSII").metadata['name'])
+  owner: root:root
+  permissions: '0755'
+- path: /etc/rc.local
+  owner: root:root
+  permissions: '0755'
+  content: |-
+    #!/bin/sh
+    grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+    grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+    nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+    echo My instance name is $instance_name
+
+    MAXCOUNT=12
+    RETRY=5
+
+    mkdir -p /scratch
+    mkdir -p /mnt/common
+
+    echo "Mounting NFS directories"
+    count=0
+    while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+    do
+      sleep 5
+      count=$[$count+1]
+    done
+
+    mount -t nfs "${nfs_server_common}" /mnt/common
+
+    mkdir /scratch/$(hostname)
+    cp /VERSION /scratch/$(hostname)/
+
+    exit 0
+</entry>
+            <entry key="Auto-generate config" type="Boolean">false</entry>
+        </extensions>
+        <interface id="0" name="eth1"/>
+        <interface id="1" name="eth2"/>
+        <interface id="2" name="eth3"/>
+        <interface id="3" name="eth4"/>
+        <interface id="4" name="eth5"/>
+        <interface id="5" name="eth6"/>
+    </node>
+    <node name="sut1" type="SIMPLE" subtype="vPP" location="425,26" vmImage="$$VM_IMAGE$$">
+        <extensions>
+            <entry key="config" type="string">#cloud-config
+bootcmd:
+- ln -s -t /etc/rc.d /etc/rc.local
+hostname: sut1
+manage_etc_hosts: true
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:
+- systemctl enable serial-getty-digi@ttyS0.service
+- systemctl start serial-getty-digi@ttyS0.service
+- systemctl start rc-local
+- sed -i '/^\s*PasswordAuthentication\s\+no/d' /etc/ssh/sshd_config
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config
+- service ssh restart
+- service sshd restart
+- sed -i 's/no-pci//' /opt/cisco/vpe/etc/qn.conf
+- sed -i 's/1024/1024 decimal-interface-names/g' /opt/cisco/vpe/etc/qn.conf
+- ln -s /dev/null /etc/sysctl.d/80-vpp.conf
+users:
+- default
+- gecos: User configured by VIRL Configuration Engine 0.21.4
+  lock-passwd: false
+  name: cisco
+  plain-text-passwd: cisco
+  shell: /bin/bash
+  ssh-authorized-keys:
+  - VIRL-USER-SSH-PUBLIC-KEY
+  - VIRL-USER-SSH-PUBLIC-KEY
+  sudo: ALL=(ALL) NOPASSWD:ALL
+write_files:
+- path: /usr/local/sbin/cloud-instance-name
+  content: |
+    #!/usr/bin/python3.5
+    import pickle
+    print(pickle.loads(open('/var/lib/cloud/instance/obj.pkl', 'rb').read(), encoding="ACSII").metadata['name'])
+  owner: root:root
+  permissions: '0755'
+- path: /etc/rc.local
+  owner: root:root
+  permissions: '0755'
+  content: |-
+    #!/bin/sh
+    grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+    grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+    nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+    echo My instance name is $instance_name
+
+    MAXCOUNT=12
+    RETRY=5
+
+    mkdir -p /scratch
+    mkdir -p /mnt/common
+
+    echo "Mounting NFS directories"
+    count=0
+    while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+    do
+      sleep 5
+      count=$[$count+1]
+    done
+
+    mount -t nfs "${nfs_server_common}" /mnt/common
+
+    # Overwrite nested VM image with latest as per NFS
+    if [ -f /mnt/common/nested-vm-current.img ]
+    then
+      rm -f /var/lib/vm/vhost-nested.img
+      cp /mnt/common/nested-vm-current.img /var/lib/vm/vhost-nested.img
+    fi
+
+    mkdir /scratch/$(hostname)
+    cp /VERSION /scratch/$(hostname)/
+    cat /var/lib/vm/vhost-nested.img | strings | grep NESTED_VERSION= > /scratch/$(hostname)/NESTED_VERSION
+
+    exit 0
+- path: /etc/sysctl.d/90-csit.conf
+  owner: root:root
+  content: |
+    # Number of 2MB hugepages desired
+    vm.nr_hugepages=1024
+
+    # Must be greater than or equal to (2 * vm.nr_hugepages).
+    vm.max_map_count=20000
+
+    # All groups allowed to access hugepages
+    vm.hugetlb_shm_group=0
+
+    # Shared Memory Max must be greator or equal to the total size of hugepages.
+    # For 2MB pages, TotalHugepageSize = vm.nr_hugepages * 2 * 1024 * 1024
+    # If the existing kernel.shmmax setting  (cat /sys/proc/kernel/shmmax)
+    # is greater than the calculated TotalHugepageSize then set this parameter
+    # to current shmmax value.
+    kernel.shmmax=2147483648
+</entry>
+        </extensions>
+        <interface id="0" name="GigabitEthernet0/4/0"/>
+        <interface id="1" name="GigabitEthernet0/5/0"/>
+        <interface id="2" name="GigabitEthernet0/6/0"/>
+        <interface id="3" name="GigabitEthernet0/7/0"/>
+    </node>
+    <node name="sut2" type="SIMPLE" subtype="vPP" location="748,26" vmImage="$$VM_IMAGE$$">
+        <extensions>
+            <entry key="config" type="string">#cloud-config
+bootcmd:
+- ln -s -t /etc/rc.d /etc/rc.local
+hostname: sut2
+manage_etc_hosts: true
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:
+- systemctl enable serial-getty-digi@ttyS0.service
+- systemctl start serial-getty-digi@ttyS0.service
+- systemctl start rc-local
+- sed -i '/^\s*PasswordAuthentication\s\+no/d' /etc/ssh/sshd_config
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config
+- service ssh restart
+- service sshd restart
+- sed -i 's/no-pci//' /opt/cisco/vpe/etc/qn.conf
+- sed -i 's/1024/1024 decimal-interface-names/g' /opt/cisco/vpe/etc/qn.conf
+- ln -s /dev/null /etc/sysctl.d/80-vpp.conf
+users:
+- default
+- gecos: User configured by VIRL Configuration Engine 0.21.4
+  lock-passwd: false
+  name: cisco
+  plain-text-passwd: cisco
+  shell: /bin/bash
+  ssh-authorized-keys:
+  - VIRL-USER-SSH-PUBLIC-KEY
+  - VIRL-USER-SSH-PUBLIC-KEY
+  sudo: ALL=(ALL) NOPASSWD:ALL
+write_files:
+- path: /usr/local/sbin/cloud-instance-name
+  content: |
+    #!/usr/bin/python3.5
+    import pickle
+    print(pickle.loads(open('/var/lib/cloud/instance/obj.pkl', 'rb').read(), encoding="ACSII").metadata['name'])
+  owner: root:root
+  permissions: '0755'
+- path: /etc/rc.local
+  owner: root:root
+  permissions: '0755'
+  content: |-
+    #!/bin/sh
+    grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+    grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+    nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+    instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+    echo My instance name is $instance_name
+
+    MAXCOUNT=12
+    RETRY=5
+
+    mkdir -p /scratch
+    mkdir -p /mnt/common
+
+    echo "Mounting NFS directories"
+    count=0
+    while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+    do
+      sleep 5
+      count=$[$count+1]
+    done
+
+    mount -t nfs "${nfs_server_common}" /mnt/common
+
+    # Overwrite nested VM image with latest as per NFS
+    if [ -f /mnt/common/nested-vm-current.img ]
+    then
+      rm -f /var/lib/vm/vhost-nested.img
+      cp /mnt/common/nested-vm-current.img /var/lib/vm/vhost-nested.img
+    fi
+
+    mkdir /scratch/$(hostname)
+    cp /VERSION /scratch/$(hostname)/
+    cat /var/lib/vm/vhost-nested.img | strings | grep NESTED_VERSION= > /scratch/$(hostname)/NESTED_VERSION
+
+    exit 0
+- path: /etc/sysctl.d/90-csit.conf
+  owner: root:root
+  content: |
+    # Number of 2MB hugepages desired
+    vm.nr_hugepages=1024
+
+    # Must be greater than or equal to (2 * vm.nr_hugepages).
+    vm.max_map_count=20000
+
+    # All groups allowed to access hugepages
+    vm.hugetlb_shm_group=0
+
+    # Shared Memory Max must be greator or equal to the total size of hugepages.
+    # For 2MB pages, TotalHugepageSize = vm.nr_hugepages * 2 * 1024 * 1024
+    # If the existing kernel.shmmax setting  (cat /sys/proc/kernel/shmmax)
+    # is greater than the calculated TotalHugepageSize then set this parameter
+    # to current shmmax value.
+    kernel.shmmax=2147483648
+</entry>
+        </extensions>
+        <interface id="0" name="GigabitEthernet0/4/0"/>
+        <interface id="1" name="GigabitEthernet0/5/0"/>
+        <interface id="2" name="GigabitEthernet0/6/0"/>
+        <interface id="3" name="GigabitEthernet0/7/0"/>
+    </node>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[3]" src="/virl:topology/virl:node[2]/virl:interface[1]"/>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[4]" src="/virl:topology/virl:node[2]/virl:interface[2]"/>
+    <connection dst="/virl:topology/virl:node[2]/virl:interface[3]" src="/virl:topology/virl:node[3]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[2]/virl:interface[4]" src="/virl:topology/virl:node[3]/virl:interface[4]"/>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[5]" src="/virl:topology/virl:node[3]/virl:interface[1]"/>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[6]" src="/virl:topology/virl:node[3]/virl:interface[2]"/>
+</topology>
diff --git a/resources/tools/virl/topologies/double-ring-nested.centos7.yaml b/resources/tools/virl/topologies/double-ring-nested.centos7.yaml
new file mode 100644
index 0000000000..00b297c7f1
--- /dev/null
+++ b/resources/tools/virl/topologies/double-ring-nested.centos7.yaml
@@ -0,0 +1,95 @@
+---
+metadata:
+  version: 0.1
+  schema:
+    - resources/topology_schemas/3_node_topology.sch.yaml
+    - resources/topology_schemas/topology.sch.yaml
+  tags: [hw, 3-node]
+
+nodes:
+  TG:
+    type: TG
+    host: "{topology[tg1][nic-management][ip-addr]}"
+    port: 22
+    username: cisco
+    priv_key: |
+{priv_key}
+    interfaces:
+      port3:
+        mac_address: "{topology[tg1][nic-2][hw-addr]}"
+        pci_address: "0000:00:06.0"
+        link: link1
+        driver: virtio-pci
+      port4:
+        mac_address: "{topology[tg1][nic-3][hw-addr]}"
+        pci_address: "0000:00:07.0"
+        link: link4
+        driver: virtio-pci
+      port5:
+        mac_address: "{topology[tg1][nic-4][hw-addr]}"
+        pci_address: "0000:00:08.0"
+        link: link2
+        driver: virtio-pci
+      port6:
+        mac_address: "{topology[tg1][nic-5][hw-addr]}"
+        pci_address: "0000:00:09.0"
+        link: link5
+        driver: virtio-pci
+  DUT1:
+    type: DUT
+    host: "{topology[sut1][nic-management][ip-addr]}"
+    port: 22
+    username: cisco
+    honeycomb:
+      user: admin
+      passwd: admin
+      port: 8183
+      netconf_port: 2831
+    priv_key: |
+{priv_key}
+    interfaces:
+      port1:
+        mac_address: "{topology[sut1][nic-0][hw-addr]}"
+        pci_address: "0000:00:04.0"
+        link: link1
+      port2:
+        mac_address: "{topology[sut1][nic-1][hw-addr]}"
+        pci_address: "0000:00:05.0"
+        link: link4
+      port3:
+        mac_address: "{topology[sut1][nic-2][hw-addr]}"
+        pci_address: "0000:00:06.0"
+        link: link3
+      port4:
+        mac_address: "{topology[sut1][nic-3][hw-addr]}"
+        pci_address: "0000:00:07.0"
+        link: link6
+  DUT2:
+    type: DUT
+    host: "{topology[sut2][nic-management][ip-addr]}"
+    port: 22
+    username: cisco
+    honeycomb:
+      user: admin
+      passwd: admin
+      port: 8183
+      netconf_port: 2831
+    priv_key: |
+{priv_key}
+    interfaces:
+      port1:
+        mac_address: "{topology[sut2][nic-0][hw-addr]}"
+        pci_address: "0000:00:04.0"
+        link: link2
+      port2:
+        mac_address: "{topology[sut2][nic-1][hw-addr]}"
+        pci_address: "0000:00:05.0"
+        link: link5
+      port3:
+        mac_address: "{topology[sut2][nic-2][hw-addr]}"
+        pci_address: "0000:00:06.0"
+        link: link3
+      port4:
+        mac_address: "{topology[sut2][nic-3][hw-addr]}"
+        pci_address: "0000:00:07.0"
+        link: link6