YARN-1137. Add support whitelist for system users to Yarn container-executor.c. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1523590 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9961. versions of a few transitive dependencies diverged between hadoop subprojects. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1523598 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9962. in order to avoid dependency divergence within Hadoop itself lets enable DependencyConvergence. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1523601 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5379. Include token tracking ids in jobconf. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1523608 13f79535-47bb-0310-9956-ffa450edef68