Add Python3 victoria unit tests
Add Python3 victoria unit tests

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

See also the PTI in governance [1].

Manual change:
- add py38 with required-projects to gate so that this works in both
  check and gate

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

Change-Id: I653f3d863bcdbeac6874a6e51e1e86ea16a18c78

openstack/networking-bgpvpn,openstack/networking-bgpvpn,openstack/networking-bgpvpn