Updated openstack/openstack
Project: openstack/keystone  677a70fe5c702d7da24756d400083530a1accdab

Increase test coverage of test_versions.py

This commit adds a couple unit tests to test_versions.py so that it's
test coverage is 100%.

Change-Id: If653c353953c09f6f3d5644b04e37dec5aebf196