octopus: qa/upgrade: disable update_features test_notify with older client as lockowner

octopus: qa/upgrade: disable update_features test_notify with older client as lockowner

 * with the recent support for async rbd operations from pacific+ when an
 older client(non async support) goes on upgrade, and simultaneously
 interacts with a newer client which expects the requests to be async,
 experiences hang; considering the return code for request completion to
 be acknowledgement for async request, which then keeps waiting for
 another acknowledgement of request completion.

 this if happens should be a rare only when lockowner is an old client
 and should be deferred if compatibility issues arises.

 * qa/upgrade: amend upgrade test workunits to use respective stable branches

Signed-off-by: Deepika Upadhyay <dupadhya@redhat.com>