Remove api_version setting from volume v3/v2 service client
Volume service clients has been made as generic without
api_version[1] so that catalog_type can select the appropriate
endpoint to make API request.
There are few service clients belonged to v3 still set
api_version which is not needed now.
This commit removes the api_version from volume service
clients completely.
[1] https://review.openstack.org/#/c/527889/
Related-prod: PRODX-9612
Change-Id: Iaf2d06b0f124e1c7b959785a04a4d770898a1eea
9 files changed