Updated openstack/openstack
Project: openstack/keystone  a099ee505179968f18cf49be25c6eb129f7565c4

Mark the revoke kvs backend deprecated, for removal in Kilo

Although the kvs.Base was marked as deprecated, the individual
backends were not.  This marks the kvs revoke backend.

Change-Id: I6592cce10687e355536a4c9f89fc885692a73e23
Partially-implements: bp deprecated-as-of-juno