Fix #994 by filtering on the annotation start time when serializing so that we skip any that do not start within the query timespan.
Fix #994 by filtering on the annotation start time when serializing
so that we skip any that do not start within the query timespan.

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

OpenTSDB/opentsdb,OpenTSDB/opentsdb,MadDogTechnology/opentsdb,MadDogTechnology/opentsdb,MadDogTechnology/opentsdb,OpenTSDB/opentsdb