fixed issue with precision, now using m instead of ms as per https://github.com/influxdb/influxdb/pull/636
fixed issue with precision, now using m instead of ms as per https://github.com/influxdb/influxdb/pull/636

(cherry picked from commit 45ed3d6abee3de3cff0ffbef6855f1b618b73f9c)

bernd/statsd-influxdb-backend,tima/statsd-influxdb-backend,Asana/statsd-influxdb-backend