Minor fix. Allow mereusers to use -m option, since thats who it is invoked from os_setup, which runs as the user.
Minor fix. Allow mereusers to use -m option, since thats who it is
invoked from os_setup, which runs as the user.

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