HIVE-8404 : ColumnPruner doesnt prune columns from limit operator (Ashutosh Chauhan via Sergey Shelukhin)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1630258 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7932: It may cause NP exception when add accessed columns to ReadEntity (Xiaomeng Huang via Prasad Mujumdar)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1630265 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8288: HiveServer2 dynamic discovery should create znodes organized by version number & add support for removing server uri's of a particular version from the server script. (Vaibhav Gumashta reviewed by Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1630280 13f79535-47bb-0310-9956-ffa450edef68