ISCSI Volume support
ISCSI Volume support

* Rewrite of Volume code to make VolumeManager more generic
* AoE vs. ISCSI moved to driver layer
* Added db support for target ids
* Added code to re-export volumes on restart of VolumeManager
* Includes a script to create /dev/iscsi volumes on remote hosts
* Change libvirt_conn to use the python connection to attach disks instead of shell
* Changed cloud and compute manager to deal with attaching, detaching, and terminating in
  a saner manner.
rajarammallya/melange,openstack-attic/melange,rajarammallya/melange,rackerlabs/melange,rackerlabs/melange,openstack-attic/melange,rackerlabs/melange,openstack-attic/melange,rajarammallya/melange