doc for configuring keystone with apache is incorrect

[Brad Topol]

doc for configuring keystone with apache is incorrect:

On http://docs.openstack.org/developer/keystone/apache-httpd.html it says the following:

Make sure you use the SQL driver for tokens, otherwise the tokens will not be shared between the processes of the Apache HTTPD server. To do that, in /etc/keystone/keystone.conf make sure you have set:

[token]
driver = keystone.token.backends.sql.Token

This incorrect. It is no longer required to mandate using the keystone.token.backends.sql.Token

  I believe the memcache token driver will work just fine.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/40281

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/40281
Committed: http://github.com/openstack/keystone/commit/60ad0b95db2237a52d673052bcf5583843ed2e21
Submitter: Jenkins
Branch: master

commit 60ad0b95db2237a52d673052bcf5583843ed2e21
Author: Adam Young <email address hidden>
Date: Mon Aug 5 16:39:48 2013 -0400

    Add memcache to httpd doc.

    Bug 1170455

    Change-Id: Id2fc4f14d0c880160c2b6ef6c9922e23fb1cb8a6