Fix 3PAR drivers attempt to locate existing host

Fix 3PAR drivers attempt to locate existing host

This patch fixes the current 3PAR drivers around attempting to locate
3PAR host that might already have volumes attached. The FC driver is
using the correct REST based queryHost but is not specifying the
parameters wwns=wwns when calling it. This was accidentally merged
during the removal on the local file locks.

The iSCSI driver was actually calling a SSH based findHost command
instead of the REST based queryHost based on iqns. The SSH based
command was failing with a session key error after a long idle time
between attaches.
Closes-Bug: 1398206

Change-Id: I5e0b1e5382c65176a74441bd4fe40d066317de48