Add tracking log intelligence to ELK

This uses the facility and priority of tracking logs in syslog to parse them as json into ELK.  It lets you do all the nice Kibana stuff like trending and such on specific tracking fields, etc in near real time.

This is syslog protocol magic (http://en.wikipedia.org/wiki/Syslog#Facility_levels).  Basically it means local1(because 142/8 = 17.75 and 17 is local1) which is the tracking log facility, and the priority is Informational because 142-(17*8)=6.  I'll beef up the comment, and no I had no prior knowledge of that magic until I was looking into this ;)