Add Python3 zed unit tests

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

See also the PTI in governance [1].

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

Change-Id: If8eeb072abe1312bb54d3a81ca50d479ad7cf970

Author: openstackadmin

.zuul.yaml

@@ -2,6 +2,6 @@
     templates:
       - check-requirements
       - horizon-non-primary-django-jobs
-      - openstack-python3-yoga-jobs
+      - openstack-python3-zed-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3