Expediate a puppet run on all machines, with at most 30 working at once
mpssh -p 30 -f vms -s -u root -r runpuppet
Poll for machines currently running our puppet wrapper
mpssh -p 20 -f vms -s -E "pgrep -f run-update-puppet" | grep " -> "
Check for and trigger reboots for machines with new kernel