Add Python3 wallaby unit tests

This is an automatically generated patch to ensure unit testing
is in place for all the of the tested runtimes for wallaby.

See also the PTI in governance [1].

[1]: https://governance.openstack.org/tc/reference/project-testing-interface.html

Change-Id: I27a03e0b51aa7ffe3dcf82ad9bedd9109b016aa1

Author: openstackadmin

.zuul.yaml

@@ -221,7 +221,7 @@
       - osc-tox-unit-tips
       - openstack-cover-jobs
       - openstack-lower-constraints-jobs
-      - openstack-python3-victoria-jobs
+      - openstack-python3-wallaby-jobs
       - publish-openstack-docs-pti
       - check-requirements
       - release-notes-jobs-python3