Do lookups for user, project

This required https://review.openstack.org/26323 in keystoneclient

Change-Id: I55bededbc20b5dcf2833c59eb2b6b069703d8a9a
Merge branch 'image-v1' into dt-test
Merge branch 'identity-catalog' into dt-test
Merge branch 'limits-show' into dt-test
Merge branch 'volume-keystone' into dt-test