kolla/ansible/roles/designate/templates/designate-api.json.j2

{
    "command": "designate-api --config-file /etc/designate/designate.conf",
    "config_files": [
        {
            "source": "{{ container_config_directory }}/designate.conf",
            "dest": "/etc/designate/designate.conf",
            "owner": "designate",
            "perm": "0600"
        }
    ]
}