- project:
    templates:
      - check-requirements
      - openstack-lower-constraints-jobs
      - openstack-python-jobs
      - openstack-python36-jobs
      - openstack-python37-jobs
      - openstackclient-plugin-jobs
      - publish-openstack-docs-pti
      - release-notes-jobs-python3

- project:
    templates:
      - check-requirements
      - openstack-lower-constraints-jobs
      - openstack-python-jobs
      - openstack-python3-train-jobs
      - openstackclient-plugin-jobs
      - publish-openstack-docs-pti
      - release-notes-jobs-python3

Add Python 3 Train unit tests
Add Python 3 Train unit tests

See the Train python3-updates goal document for details:
https://governance.openstack.org/tc/goals/train/python3-updates.html

Change-Id: Ib80a4499eeff18d2d414fe6f6f0f45034b6eb657
