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 Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/845994 Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/845894 Change-Id: I3db09c840b448c665c9f2a16c78fe0e0a38f158a