Updated openstack/openstack
Project: openstack/keystone  714917ab0e573df89f543919781b201802fc887d

Update the revocation configuration docs

Since the revocation extension is enabled by default, I think we
can drop it's experimental tag, and replace it with an INFO one
that says it's enabled by default.

Change-Id: If24994287381c1edb1d8b7e947d0661e2980b240