Updated openstack/openstack
Project: openstack/oslo.config  b3ed1ac24ecc0d34ca237004f9a71fb6bc3aa711

Graduate config fixture

Adds the config fixture from incubator and the associated tests,
updating both as appropriate for the new location.

bp graduate-config-fixture

Change-Id: I5a748c3b92b26c23101a565b7ca6790b8d00ec76