Fix default region for OSPD
Fix default region for OSPD

For some reason, the default region in OSPD is regionOne instead of
the 'used everywhere' RegionOne. Because of this, and tempest default
region is RegionOne, some tests fails, like all the identity v3 tests.
This patch set the identity.region to regionOne.
This won't be necessary once https://review.openstack.org/#/c/336442/
be merged.

Change-Id: Ie61b181e2fc1634541156d72124172e9e7e69c2d

redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed