Outdated test data clean up in volume
Outdated test data clean up in volume

Now all the volume unit tests (both v1 and v2)
are using fake classes. All the old fake data
and code can be removed.

Change-Id: Ib35ad4b6c94c42a21215e012f80f8978a74a3d18

dtroyer/python-openstackclient,dtroyer/python-openstackclient,openstack/python-openstackclient,openstack/python-openstackclient