The cinder v1 API was removed in the queens release. The
'os_keystone_service' module is used to allow removal of existing
services and endpoints. Disabling the v2 API will now also ensure there
is not a registered service or endpoints.
The 'cinder_enable_v3_api' variable has been removed since it had no
effect on cinder's enablement of the v3 API.
Depends-On: https://review.openstack.org/#/c/557016/
Change-Id: I02d2bae8712c0ca223cafb5a43304806c4b83125
f9ceec9cd5