ryu/nova: catch up
d1888a3359345acffd8d0845c137eefd88072112
FLAGS.add_option -> FLAGS.register_opt
> commit
d1888a3359345acffd8d0845c137eefd88072112
> Author: Mark McLoughlin <markmc@redhat.com>
> Date: Fri Feb 3 00:50:58 2012 +0000
>
> Remove the last of the gflags shim layer
>
> Make FLAGS a ConfigOpts instance and fix up all the places where we
> expected FlagValues behaviour.
>
> Change-Id: I8f96f42e0d8d30ba6b362d29861e717cf0fa9e89
and removed work around for circular import as the nova change set of
1265104b873d4cd791cecc62134ef874b4656003 fixes the circular import issue.
Change-Id: I4897dc848efa7fff6c73399a72d876fb503121e7