restore missing code to init Hostname in init(). I hadn't meant to remove it entirely
restore missing code to init Hostname in init(). I hadn't meant to remove it entirely

quipo/statsd,privodoc/statsd,dordille/statsd,RyzacInc/statsd,goibibo/statsd,hoffoo/statsd,jmptrader/statsd-3,venugopalkandru/statsd,mirrr/statsd,CrowdSurge/statsd