Cinder recently removed their v2 API [1] which is causing the functional
tests to fail. Improve our 'is_service_enabled' test helper to use the
'versions show' command, which queries the service catalog and can give
us information about the service version as well as answer the more
general "is this service available" question. We also resolve a
long-standing TODO in the process.
[1] https://review.opendev.org/c/openstack/cinder/+/792299
Change-Id: I381069357aa008344e15327adf3a863c0c2e1f04
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
c1209601b4