Updated openstack/openstack
Project: openstack/keystone  a37fcad682fa8a82e3aaf96c5804e8ac878147d6

Use openstackclient examples in configuration documentation

We should start encouraging the use of openstackclient in the
Keystone documentation. However, maintain some references to
keystoneclient's CLI for backwards compatability purposes.

Change-Id: I16fa302c2cd5bf3592725ef7f3ef6c5ba6e83354