system/neutron/control/single.yml

classes:
- service.neutron.control.single
parameters:
  neutron:
    server:
      database:
        host: ${_param:single_address}
  mysql:
    server:
      database:
        neutron:
          encoding: utf8
          users:
          - name: neutron
            password: ${_param:mysql_neutron_password}
            host: '%'
            rights: all
          - name: neutron
            password: ${_param:mysql_neutron_password}
            host: ${_param:single_address}
            rights: all