There is a new Zones implementation coming that will use AMQP-to-AMQP
channels vs. the public API. This is being done for three reasons:
1. remove complications in the OpenStack API (and possibly allow EC2 Zones)
2. remove dependencies on keystone and novaclient
3. faster scheduling (fewer chances for race conditions)
Learn more here:
http://wiki.openstack.org/EssexSchedulerImprovements
Change-Id: I6fe538923dd5ae19276afac2ac3311a285fd5c99