rpc_backend was an old oslo_messaging option
that was deprecated in stable/newton and removed
in master/stein [2], so stop using it in our
unit tests.
The coverage job in manila was always non-voting,
however, a773e31420
added a common coverage job-template from the
openstack-zuul-jobs repository. This change
inadvertently made the non-voting cover job a
voting job.
Our coverage script isn't perfect, it is known
to fail erroneously on non-code changes, and
some genuine failures are just an indication
to developers and reviewers to make the best
effort to adhere to the script's strict
checks [3].
These changes are unrelated, but must be fixed
together to pass the gate, since we have a
chicken-and-egg problem with both failures
preventing separate fixes from merging
separately.
[1] https://review.openstack.org/#/c/317285/
[2] https://review.openstack.org/#/c/580910/
[3] http://git.openstack.org/cgit/openstack/manila/tree/tools/cover.sh
Closes-Bug: #1796759
Related-Bug: #1797512
Change-Id: Ie349c3866d51ea4e706369ad67bc1155f62f2651
a07c51e8b0