ganglia plugin for openstreetmap sync delay

Adapted the postgresql one to measure the osm planet lag

Change-Id: I5384372cce10d2108c246408cbd86f7babae05f2
Remove pmtpa from deployment role

Change-Id: Ifcb2c1cb2611abe95ede44d43476def6dde9621d
Merge "ganglia plugin for openstreetmap sync delay" into production