Updated openstack/openstack
Project: openstack/keystone  025a404ac379b125328e6daa0f959be22554930c

Fix cache configuration checks

There were two different checks to see if a cache region was already
configured with a backend. Both were changed to use the
Region.is_configured property.

The initial reason for this change was that the hasattr approach in the
test fixture was causing some issues in Python 3. For some reason it was
forcing the __get__ lookup on the descriptor and Python 2 did not.

bp python3

Change-Id: I409656f5ede08160cc68d48e7a3a636328e3e9a6