Set a unique InitiatorName, <iqn>:<hostname>, same as for FreeBSD.
Set a unique InitiatorName, <iqn>:<hostname>, same as for FreeBSD.

Previously, every node wound up with the same value which was the
default value when the open-iscsi package was installed.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome