puppetize beta fatal monitor

Chris McMahon wrote a basic fatal monitor for beta. I have imported it
in the operations/puppet repository with:
    https://gerrit.wikimedia.org/r/108039

This new patch puppetize the script so we can get it running on the
deployment-bastion.pmtpa.wmflabs instance.  It is simple enough that it
simply depends on ruby.

Something to look at is the cronjob, I made it to run as the 'nobody'
user.  Not sure it is going to work though but worth a try.

bug: 60046
Change-Id: I5e3fe7e1f53c9b0d0079707a1e36fc382ba8701b