* Add stand-alone bundle_constrainer.py tool from uosci and a juju/maas tag injection script; adjust baremetal specs to inject maas tags where applicable.
* Rename quantum-gateway to neutron-gateway in bundles.
* Teach mojo_utils to consume optional network environment variables, as are used by o-c-t and uosci.
* Extend lint and spec sanity checks;
* Enable per-series collect configs in full_stack specs; This is necessary as some charm branches need to be different for some series (ex: percona-cluster != precise).
* Update juju status to force yaml output, in prep for eventual default format change.
* Replace mysql charm branches with percona-cluster.