Add missing requirements
Add missing requirements

These are used by the Google backup engine.

Present since:
 https://review.openstack.org/#/c/266915/

Depends-On: I4859732719d96c102cc56b2aa0672657915ed0bf
Change-Id: I5759b03a30bbf9f4b81abd898fea77e0f190c674

j-griffith/cinder,phenoxim/cinder,cloudbase/cinder,mahak/cinder,mahak/cinder,Nexenta/cinder,Datera/cinder,Hybrid-Cloud/cinder,eharney/cinder,NetApp/cinder,Datera/cinder,j-griffith/cinder,bswartz/cinder,bswartz/cinder,eharney/cinder,openstack/cinder,openstack/cinder,ge0rgi/cinder,NetApp/cinder,Hybrid-Cloud/cinder,phenoxim/cinder,cloudbase/cinder,Nexenta/cinder