Fix "* nodes are down" message be be from the real users email address rather than "USER@boss.emulab.net".  The reason they where from USER@boss.emulab.net is because they the script was being run as USER. I just added the "From:" header to the email.
Fix "* nodes are down" message be be from the real users email address
rather than "USER@boss.emulab.net".  The reason they where from
USER@boss.emulab.net is because they the script was being run as USER.
I just added the "From:" header to the email.

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