Use keystonemiddleware package

keystonemiddleware package will be used instead of deprecated
keystoneclient.middleware module to authorize requests with
keystone auth_token

Update python-keystoneclient to match version in our repos

Change-Id: Ib6025a5d243c76995ca1efac16d5d5025241f81c
Implements: blueprint access-control-master-node-improvments
Related-Bug: #1383616
Depends: I32848ccd2279c1467818e1ff9e1a19becc9f7ae7