Add Python3 victoria unit tests

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

See also the PTI in governance [1].

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

Change-Id: If89122615a5ba9ff1d053bf70e738f5e7c5dfa2c

zuul.d/project.yaml

@@ -4,7 +4,7 @@
       - check-requirements
       - openstack-cover-jobs
       - openstack-lower-constraints-jobs
-      - openstack-python3-ussuri-jobs
+      - openstack-python3-victoria-jobs
       - ansible-role-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3