Fix compile errors in TestTsdbQueryDownsample, TestQueryBuilder and TestAggregationIterator
fixed testspan
Merge branch 'next_query_test' into next_query_testspan
fixed TestCompactedRow
removed unused parameter
fixed TestQueryRpc
Extract QueryBuilder related methods from TestTsdbQuery
Update tests for QueryBuilder to set required parameters
Fix TestQueryRpc (remove nonexisting parameter)
Merge branch 'next_query' into next_query_test
Fix indentation in TestSpan
Use a shorter version to build ImmutableSets
Check the incoming TSUIDS in Span
Use a constant for the empty annotation list in TestSpan
fixed TestTsdbQuery
Merge branch 'next_query_test' of https://github.com/hi3g/opentsdb into next_query_test
Cleanup TestSpan
Merge remote-tracking branch 'origin/next_query_test' into next_query_test
Allow Span to accept a mutable SortedSet but make a defensive copy instead
Merge branch 'next_query_test' of github.com:hi3g/opentsdb into next_query_test