Fix follow up review issues with endpoint policy backend patch.

Change-Id: If5d741ae9efdbbbc84df15d30b83d1024c2b6f21
Closes-bug: 1363750
Remove TODO that was done

Keystone already has token routes.

Change-Id: I3c1ee1953070d04b3f787759cd619bcd07d2a40e
Merge "Remove TODO that was done"
Merge "Fix follow up review issues with endpoint policy backend patch."