HIVE-8029 - Remove reducers number configure in SparkTask [Spark Branch] (Rui Li via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1623837 13f79535-47bb-0310-9956-ffa450edef68
Merged from trunk - HIVE-8035 - Add SORT_QUERY_RESULTS for test that doesn't guarantee order (Rui Li via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1624160 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'upstream/spark' into spark