debian: move init vars at the top
debian: move init vars at the top

this allows /etc/default/opentsdb to override them at will (e.g. --auto-metric)

Signed-off-by: Chris Larsen <83037b211e1d109d6858769a113e269c3139ffd3@yahoo-inc.com>

MadDogTechnology/opentsdb,johann8384/opentsdb,alienth/opentsdb,alienth/opentsdb,OpenTSDB/opentsdb,MadDogTechnology/opentsdb,ShefronYudy/opentsdb,OpenTSDB/opentsdb,ShefronYudy/opentsdb,eswdd/opentsdb,eswdd/opentsdb,andyflury/opentsdb,johann8384/opentsdb,andyflury/opentsdb,OpenTSDB/opentsdb,MadDogTechnology/opentsdb