Merge "Make kolla ansible user and group configurable"

ansible/group_vars/all/kolla

ansible/kolla-target-venv.yml

ansible/roles/kolla-ansible/defaults/main.yml

ansible/roles/kolla-ansible/templates/globals.yml.j2

ansible/roles/kolla-ansible/templates/overcloud-top-level.j2

ansible/roles/kolla-ansible/templates/seed.j2

ansible/roles/kolla-ansible/tests/test-defaults.yml

ansible/roles/kolla-ansible/tests/test-extras.yml

ansible/roles/swift-setup/tasks/rings.yml

etc/kayobe/kolla.yml

releasenotes/notes/kolla-user-group-85bbe8038c3f719c.yaml