Fix circular dependent imports, and correct import by name

policy_test.py was importing from policy_test_utils.py and vice versa.
We dont seem to need to import stuff from policy_test into policy_test_utils.py
Also correct import by name of policy_test_utils
Merge remote-tracking branch 'upstream/master'
Merge pull request #138 from vedujoshi/master

Fix circular dependent imports, and correct import by name