reclass/storage/system/openstack_control_single.yml

parameters:
  _param:
    openstack_control_node01_hostname: ctl01
  reclass:
    storage:
      node:
        openstack_control_node01:
          name: ${_param:openstack_control_node01_hostname}
          domain: ${_param:cluster_domain}
          classes:
          - cluster.${_param:cluster_name}.openstack.control
          params:
            salt_master_host: ${_param:reclass_config_master}
            linux_system_codename: xenial
            single_address: ${_param:openstack_control_node01_address}