Tox venv commands are expected to return a code that indicates
test cases final outcome:
- 0 => any test vase has failed
- 1 => some test case has failed
- not in [0, 1] => any other error
This change handles the special case when some test cases have
failed. In any of below cases:
- JENKINS_URL environment variable is defined on controller node
- --ignore-test-failure flag is passed to IR plugin
then the plugin runs without treating it as an error.
This has been introduced because when running the plugin from
a Jenkins slave host, Jenkins itself is expected to check test
case have failed looking at produced Junit XML artifacts.
Change-Id: Ia7d7f736ae18a7561dced2271228d86ca658e892
32c91c7264