Pools reported by NFS and block drivers for CDOT and 7mode
now report multiattach as a capability. NetApp cDOT and 7mode
LUNs have always supported multi-attach, but their capability
was not previously reported as such.
Closes-Bug: #1612763
Change-Id: Ib7545438998b02fb7670df44a6486764c401c5f6
