Implement support for service_tokens. For that we convert role_name to be a list along with renaming corresponding variable. Additionally service_type is defined now for keystone_authtoken which enables to validate tokens with restricted access rules Depends-On: https://review.opendev.org/c/openstack/openstack-ansible-plugins/+/845690 Change-Id: Ib7fd1a80affe0fa8c6b030fdbfdd60693f104cd6 Related-Bug: #1948456