Add Python3 yoga unit tests
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: Icf192aedeadf7fbed6e0f217da5b348172dc4478

openstack/python-swiftclient,sohonetlabs/python-swiftclient,openstack/python-swiftclient,sohonetlabs/python-swiftclient