Fix ZFSSA iSCSI volume driver to allow connection of a volume to more
than one connector (initiator group) at the same time, which is
required for live-migration to work.
Note: ZFSSA software release 2013.1.3.x (or higher) will be required
to use this functionality.
Change-Id: I44b86fd967a21da465b44a8db15331ca17438961
Closes-Bug: #1565051