resources:
  httpproxy:
    number: 1
    flavor: large
    image: trusty
    networks: default
    assign_floating_ip: true

resources:
  httpproxy:
    number: 1
    flavor: large
    image: trusty
    networks: default
    boot_volume: default_volume
    assign_floating_ip: true

Make httpproxy boot from volume
Make httpproxy boot from volume

so that we can create a new external layout
