Updated openstack/openstack
Project: openstack/python-keystoneclient  5b26b9c617fae1aeec6c2c37db6c55aaee4f1057

Remove middleware architecture doc

The auth_token middleware was moved to the keystonemiddleware repo and
the middleware architecture doc was copied there. The copy in the
client repo can be removed.

Change-Id: Ic7b7f970a08746dd4f5d61dd5144c1dae168ad6d