Override the local_nid in the logs during zeroconf mount. If the

Override the local_nid in the logs during zeroconf mount.  If the
local_nid option is not specified, then mount.lustre will use
the hostname for socknal, or /proc/elan/device0/position for qswnal.

For nettype=elan, if remote_nid isn't set the mount.lustre will
attempt to parse the hostname and use the first series of numbers as
the nid.  So, mdev20-eth1 will become elan id 20.