A couple of protogeni sitevars for primitive policy stuff. Allow external users and max number of total nodes that external users can get.
A couple of protogeni sitevars for primitive policy stuff. Allow
external users and max number of total nodes that external users can
get.

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