Updated openstack/openstack
Project: openstack/keystone  c1a6639924a245bf34a5d438024fb3171f6c76fc

Add revocation extension to default pipeline

Since this extension will have an impact across many projects
within OpenStack, it should be on by default.

Change-Id: Id9ff5e4e22125c54b5793bc42819fb4d1ef6dc90