Updated openstack/openstack
Project: openstack/keystone  305d983d3ef596376e6294849429ce1bf9db88a3

Refactor existing endpoint filter tests

Refactored the existing suite of endpoint filter tests including
renaming method names to aid readability and added additional
comments.

Change-Id: I98ded2632a6130e2b664e987f08499162801be6b