Add Python3 zed unit tests
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: I5c45013aad4402281493e320cc90c5fb91a45bef

openstack/python-muranoclient,openstack/python-muranoclient