drill

44f17eaf - DRILL-6922: Do not set return result set option on query level if it is the same as current value

DRILL-6922: Do not set return result set option on query level if it is the same as current value 1. Rename return result option name to `exec.query.return_result_set_for_ddl`. 2. Add check if option value is the same as current value in DrillSqlWorker before setting result set option on query level. 3. Separate Session and Query options on Web UI. closes #1584