HDFS-5449. WebHdfs compatibility broken between 2.2 and 1.x / 23.x. Contributed by Kihwal Lee.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1556927 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch: upstream/trunk