make test: refactor vcl test cases

- Reduce replicated code in test cases
- Configure separate namespace secrets for thru hoststack
  test case to validate namespace secret functionality.
- Pass per-instance environment variables to Worker class
  init function.

Change-Id: I3cd5d4538f105cbfb09671c4d761541b40714b8f
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/test/framework.py b/test/framework.py
index c303bf9df71..78aebf61e83 100644
--- a/test/framework.py
+++ b/test/framework.py
@@ -11,6 +11,7 @@ import time
 import resource
 import faulthandler
 import random
+import copy
 from collections import deque
 from threading import Thread, Event
 from inspect import getdoc, isclass
@@ -1126,11 +1127,11 @@ class VppTestRunner(unittest.TextTestRunner):
 
 
 class Worker(Thread):
-    def __init__(self, args, logger):
+    def __init__(self, args, logger, env={}):
         self.logger = logger
         self.args = args
         self.result = None
-        self.env = {}
+        self.env = copy.deepcopy(env)
         super(Worker, self).__init__()
 
     def run(self):