aptly/server/mirror/ubuntu/xenial/maas.yml

parameters:
  _param:
    apt_mk_version: stable
    mirror_maas-xenial_source: http://ppa.launchpad.net/maas/stable/ubuntu
    mirror_maas-xenial_distribution: xenial
    mirror_maas-xenial_components: main
    mirror_maas-xenial_gpgkeys:
      - 684D4A1C
  aptly:
    server:
      mirror:
        maas-xenial:
          source: ${_param:mirror_maas-xenial_source}
          distribution: ${_param:mirror_maas-xenial_distribution}
          components: ${_param:mirror_maas-xenial_components}
          architectures: amd64
          gpgkeys: ${_param:mirror_maas-xenial_gpgkeys}
          publisher:
            component: maas
            distributions:
              - xenial/${_param:apt_mk_version}