Updated openstack/openstack
Project: openstack/heat  e46485050c9a50d45d749a0d8ef82985bd91778a

Use auth_token from keystonemiddleware

auth_token middleware in python-keystoneclient is deprecated and has
been moved to the keystonemiddleware repo.

Closes-Bug: #1342274

Change-Id: I1aadbe24db63eb2507b088cd53886d7f2e192cab