* Add openstack-tox-py312 as non-voting job
* Add SetupTools to our functional testing venvs
* Use SetupTools' vendored distutils in tests
* Also run coverage tests serially
* Omnibus PBR CI fixups
* Serialize tests
* Fix tempest-full job
* Use summary for the package summary
* Test on py310 and py311
- Use stestr rather than pytest to run the testsuite.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-pbr?expand=0&rev=162
