HIVE-8905: Servlet classes signer information does not match [Spark branch] (Chengxiang via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1641312 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8936: Add SORT_QUERY_RESULTS for join tests that do not guarantee order [Spark Branch] (Chao via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1641519 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8834: enable job progress monitoring of Remote Spark Context [Spark Branch] (Rui via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1641525 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/spark' into spark