add tests for our custom ansible callback plugin

tox.ini

@@ -56,6 +56,14 @@ deps =
 commands =
     make UI_TEST_MODE=CI test-ui
 
+[testenv:ansible]
+deps =
+    ansible
+    pytest
+    -r{toxinidir}/requirements/requirements_ansible.txt
+commands =
+    {envdir}/bin/py.test awx/lib/tests/ -c awx/lib/tests/pytest.ini {posargs}
+
 [testenv:coveralls]
 commands=
     coverage combine