HADOOP-8816. HTTP Error 413 full HEAD if using kerberos authentication. (moritzmoeller via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1433568 13f79535-47bb-0310-9956-ffa450edef68
merge YARN-135 from trunk. Client tokens should be per app-attempt, and should be unregistered on App-finish. Contributed by Vinod Kumar Vavilapalli


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HDFS-4392. Merge 1433578 change from trunk

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merge YARN-135 commit amendment from trunk. Add missing files from previous commit.


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HADOOP-8589. ViewFs tests fail when tests and home dirs are nested. Contributed by Sanjay Radia


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