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: I1972b0a70173a259d72a8f9d1a2df4221038ac61

zuul.d/project.yaml

@@ -3,8 +3,8 @@
       - check-requirements
       - openstack-cover-jobs
       - openstack-lower-constraints-master-branch-jobs
-      - openstack-python3-xena-jobs
-      - openstack-python3-xena-jobs-arm64
+      - openstack-python3-yoga-jobs
+      - openstack-python3-yoga-jobs-arm64
       - periodic-stable-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3