Another minor fix. If there is no GID, then copy in the pid. There is a lurking case where GID is null. Need to find that, but in the meantime this will keep the tmcd happy.
Another minor fix. If there is no GID, then copy in the pid. There is
a lurking case where GID is null. Need to find that, but in the
meantime this will keep the tmcd happy.

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