Fix from Hussam, to avoid multiple shared-node-listener processes. Note that the shared-node-listener should be doing this, but this is easier.
Fix from Hussam, to avoid multiple shared-node-listener processes.
Note that the shared-node-listener should be doing this, but this
is easier.

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