HDFS-6257. TestCacheDirectives#testExceedsCapacity fails occasionally (cmccabe)

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HDFS-6399. Add note about setfacl in HDFS permissions guide. Contributed by Chris Nauroth.

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HADOOP-9099. NetUtils.normalizeHostName fails on domains where UnknownHost resolves to an IP address. Contributed by Ivan Mitic.


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HADOOP-10664. TestNetUtils.testNormalizeHostName fails. Contributed by Aaron T. Myers.


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