HDFS-5702. FsShell Cli: Add XML based End-to-End test for getfacl and setfacl commands. Contributed by Vinay.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4685@1562668 13f79535-47bb-0310-9956-ffa450edef68