This step in the process duplicates the auth-token code to keystoneclient but,
for the moment, leaves a copy in its origional location in keystone.
Testing for auth-token is also copied across, as is the cms support file.

Although no other project will yet pick up the code here in the client, since
the paste.ini files haev not yet been updated, it would work if anyone
did reference it.

Once the client code is in, the next step is to update all the other
project paste files, and then finally retire the code from keystone.

Change-Id: I88853a373d406020d54b61cba5a5e887380e3b3e

to moving auth_token here from keystone.  No functional change
should occur from this commit (even though it did refresh a newer copy
of openstack.common.setup.py, none of the newer updates are in
functions called from this client)

blueprint authtoken-to-keystoneclient-repo

Change-Id: Ie54feb73e0e34b56400fdaa8a8f876f9284bac27