Allowing a configurable StatsD server

Arguably this should be in some sort of configuration file
that's not in puppet. But right now that's not quite possible
unless I start introducing the concept of realms into my
versioned config file.

Change-Id: Ib787062bbba93d3fba98f1c51d605548d473eeb0
Merge "Allowing a configurable StatsD server" into production