Updated openstack/openstack
Project: openstack/ceilometer  de7cb8d693fa5aaa8f25ff08e9e22508a9a59c3c

update references to auth_token middleware

auth_token middleware is deprecated from keystoneclient. this
patch updates references to use keystonemiddleware instead.

Change-Id: I79b9657cafbc66000ee63b8d16104af9cd32552d
Closes-Bug: #1373115