Support #5787: FNAL CVMFS Stratum 1 support
Make the HA-stratum1 scripts more general to support FNAL & RAL
RAL is setting up an HA cvmfs stratum1 based on my scripts, and CMS tier1 is planning on installing new machines themselves and taking over more of the day-to-day operations. Update the HA management to be a little more general and simpler to understand. Put them in an rpm that I maintain and they both install.