Add Python3 antelope unit tests
Add Python3 antelope unit tests

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

See also the PTI in governance [1].

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

Change-Id: Ib31c5f4f2d848bffda2154db0fa235fb53e8b3ee

openstack/ironic-ui,openstack/ironic-ui,openstack/ironic-ui,openstack/ironic-ui