Updated openstack/openstack
Project: openstack/oslo-incubator  ddd63a7346bb57a47b0cd031608fc9475d68e241

Fixes nits in module policy

These nits were reported while syncing oslo-incubator code.
https://review.openstack.org/#/c/133492/2/heat/openstack/common/policy.py

Change-Id: I534763383eb2199c9223223d4c2fbd6dd25272ed