Update table for netapp_eseries_host_type

This change adds the new config option for the NetApp E-Series driver
that allows an admin to override the host type methodology used by the
iSCSI client that is attaching to LUNs exported as Cinder volumes.

Change-Id: I0dcab31a0940aaa5f3b1e369fece4687f89acc70
Merge "Update table for netapp_eseries_host_type"