Merge "Add a debug env for unit tests"

tox.ini

@@ -20,6 +20,9 @@ commands =
 # there is also secret magic in ostestr which lets you run in a fail only
 # mode. To do this define the TRACE_FAILONLY environmental variable.
 
+[testenv:debug]
+commands = oslo_debug_helper -t neutron/tests {posargs}
+
 [testenv:common]
 # Fake job to define environment variables shared between dsvm/non-dsvm jobs
 setenv = OS_TEST_TIMEOUT={env:OS_TEST_TIMEOUT:180}