HADOOP-8816.  HTTP Error 413 full HEAD if using kerberos authentication (daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1455974 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1325531 Merging from trunk to branch-0.23 to fix HDFS-3256.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1455991 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-0.23' into branch-0.23-gd
Merge remote branch 'origin/branch-0.23-gd' into fb-xxx-hadoop-auth-kerberos-realm-branch-0.23-gd