This PS is to permit mac addresses that include capitals letters in the
range A-F.

Change-Id: Ib0ac54848cec9c7ae315614e61cbfb4d663fcce4

Adding test as well as the service client for the compute
server external event API
- https://docs.openstack.org/api-ref/compute/?expanded=run-events-detail#run-events

Change-Id: I1c9a99d036de760a15a5725db87ca4e9d6f2263d

Fix the volume transfers client so that it supports microversions,
by deriving from the volume service's base client.

Define volume transfer schema for mv 3.55 and 3.57, and
volume schema for mv 3.65 and 3.69.

Change-Id: I4ad7fe336c5193604d95fca5a72695d82adaa9f0

Compute microversion 2.75 made the rebuild and update server
response same as get servers
- https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id68

Partially Implements: blueprint fix-microversion-gap

Change-Id: I1728e5de0e815def0fe31c242203bd9f36dc41f4

Compute microversion 2.45 changed the response
of create image and create backup APIs.

create image schema already covered
- https://github.com/openstack/tempest/blob/fec2c93cdcc14ad08d0a35136ee287525e7a4879/tempest/lib/api_schema/response/compute/v2_45/images.py

This patch adds the schema for create backup API.

Partially Implements: blueprint fix-microversion-gap

Change-Id: Icfeec8957c58472e7f176680d48745b5c5350b55