Removing python-keystone from Requires list; Fixing Bug https://bugs.launchpad.net/juniperopenstack/+bug/1359462

Change-Id: I4f5483bb7b7430a914ecb9d1565f09e71fdadacf
Merge "Removing python-keystone from Requires list; Fixing Bug https://bugs.launchpad.net/juniperopenstack/+bug/1359462"