[Blueprint servercloud-r-openstack-ubuntu-images] Import and advertise Ubuntu images on openstack

[James Page]

Blueprint changed by James Page:

Work items changed:
  Work items:
- add new service to keystone: TODO
+ add new service to keystone: DONE
  write juju charm for syncing images and hooking into keystone: TODO
  add support to juju openstack provider: TODO

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Import and advertise Ubuntu images on openstack
https://blueprints.launchpad.net/ubuntu/+spec/servercloud-r-openstack-ubuntu-images