Add Python3 yoga unit tests

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

See also the PTI in governance [1].

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

Change-Id: I8e6532689aed280ce32a6b33dbb7b26bfb6c8044

Author: openstackadmin

.zuul.yaml

@@ -46,7 +46,7 @@
       - openstack-lower-constraints-jobs
       - check-requirements
       - openstack-cover-jobs
-      - openstack-python3-xena-jobs
+      - openstack-python3-yoga-jobs
       - openstackclient-plugin-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3