keystone sample config is out of date

[Henry Nash]

A recent change [1] change the keystone config, but didn't update the sample.

[1] https://review.openstack.org/#/c/126897/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/147654

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/147654
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=15aa85be027460d37ff829f3af541d5ec438103f
Submitter: Jenkins
Branch: master

commit 15aa85be027460d37ff829f3af541d5ec438103f
Author: Henry Nash <email address hidden>
Date: Fri Jan 16 00:12:02 2015 +0000

    Update the keystone sample config

    A recent change (https://review.openstack.org/#/c/126897/) updated
    the config file but did not update the keystone sample - this
    fixes this issue.

    Change-Id: I7af443de03f2ba80fccdc3399652e9093dad3149
    Closes-bug: 1411411