HADOOP-10645. TestKMS fails because race condition writing acl files. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1598773 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10611. KMS, keyVersion name should not be assumed to be keyName@versionNumber. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1598775 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6056. Clean up NFS config settings. Contributed by Brandon Li

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1598782 13f79535-47bb-0310-9956-ffa450edef68