YARN-1964. Create Docker analog of the LinuxContainerExecutor in YARN
HADOOP-9576. Changed NetUtils#wrapException to throw EOFException instead of wrapping it as IOException. Contributed by Steve Loughran

Conflicts:
	hadoop-common-project/hadoop-common/CHANGES.txt
HADOOP-9576. Merging to branch-2.6 for hadoop-2.6.0-rc1.
YARN-2841. RMProxy should retry EOFException.  Contributed by Jian He
YARN-2843. Fixed NodeLabelsManager to trim inputs for hosts and labels so as to make them work correctly. Contributed by Wangda Tan.

(cherry picked from commit 0fd97f9c1989a793b882e6678285607472a3f75a)

Conflicts:
	hadoop-yarn-project/CHANGES.txt
YARN-2843. Merging to branch-2.6 for hadoop-2.6.0-rc1.

(cherry picked from commit 51957ca81886ac3553c44848631fdf53766a25ae)

Conflicts:
	hadoop-yarn-project/CHANGES.txt
YARN-2794. Fixed log messages about distributing system-credentials. Contributed by Jian He.

(cherry picked from commit be7bf956e96dd0fd9b521ca71df9124b9cc5ebd0)
HDFS-7387. NFS may only do partial commit due to a race between COMMIT and write. Contributed by Brandon Li

(cherry picked from commit 99d9d0c2d19b9f161b765947f3fb64619ea58090)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/OpenFileCtx.java

(cherry picked from commit 0c3b7887e6a249bcab6c766137adcaea8afe1c67)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
HDFS-7387. Merging to branch-2.6 for hadoop-2.6.0-rc1.

(cherry picked from commit 09f36b1688a375f45c19889e326d5d35249882b1)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
HADOOP-11217. (Addendum to allow SSLv2Hello) Disable SSLv3 in KMS. (Robert Kanter via kasha)

(cherry picked from commit 87818ef4e7c1a49dc3b0d6766cceb3499b07b837)
HDFS-7391. Renable SSLv2Hello in HttpFS. Contributed by Robert Kanter.

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
Fix CHANGES.txt to keep it consistent with trunk.