Emilien Macchi 5a45ef93dc iSCSI backend for Cinder volumes
As part of multi-backends, add iSCSI cinder backend.

* Add iscsi new backend.
* Allow to run iSCSI in multi-backend configurations via Hiera.
* Unit tests to validate both iSCSI & multi-backends.
2014-09-23 09:04:24 -04:00
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