tests: refactor asf framework code

- Make framework.py classes a subset of asfframework.py classes
- Remove all packet related code from asfframework.py
- Add test class and test case set up debug output to log
- Repatriate packet tests from asf to test directory
- Remove non-packet related code from framework.py and
  inherit them from asfframework.py classes
- Clean up unused import variables
- Re-enable BFD tests on Ubuntu 22.04 and fix
  intermittent test failures in echo_looped_back
  testcases (where # control packets verified but
  not guaranteed to be received during test)
- Re-enable Wireguard tests on Ubuntu 22.04 and fix
  intermittent test failures in handshake ratelimiting
  testcases and event testcase
- Run Wiregard testcase suites solo
- Improve debug output in log.txt
- Increase VCL/LDP post sleep timeout to allow iperf server
  to finish cleanly.
- Fix pcap history files to be sorted by suite and testcase
  and ensure order/timestamp is correct based on creation
  in the testcase.
- Decode pcap files for each suite and testcase for all
  errors or if configured via comandline option / env var
- Improve vpp corefile detection to allow complete corefile
  generation
- Disable vm vpp interfaces testcases on debian11
- Clean up failed unittest dir when retrying failed testcases
  and unify testname directory and failed linknames into
  framwork functions

Type: test

Change-Id: I0764f79ea5bb639d278bf635ed2408d4d5220e1e
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

1 files changed, 5 insertions, 13 deletions

diff --git a/test/test_cnat.py b/test/test_cnat.py
index a7f949db799..ff8e1ebbbbb 100644
--- a/test/test_cnat.py
+++ b/test/test_cnat.py
@@ -2,27 +2,19 @@
 
 import unittest
 
-from framework import VppTestCase, VppTestRunner
-from vpp_ip import DpoProto, INVALID_INDEX
+from framework import VppTestCase
+from asfframework import VppTestRunner
+from vpp_ip import INVALID_INDEX
 from itertools import product
 
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether
 from scapy.layers.inet import IP, UDP, TCP, ICMP
-from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet import IPerror, TCPerror, UDPerror
 from scapy.layers.inet6 import IPv6, IPerror6, ICMPv6DestUnreach
 from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply
 
-import struct
-
-from ipaddress import (
-    ip_address,
-    ip_network,
-    IPv4Address,
-    IPv6Address,
-    IPv4Network,
-    IPv6Network,
-)
+from ipaddress import ip_network
 
 from vpp_object import VppObject
 from vpp_papi import VppEnum