HADOOP-11309. System class pattern package.Foo should match package.Foo$Bar, too. Contributed by Gera Shegalov
(cherry picked from commit b4ca7276902ad362f746ea997f7e977a7a6abd0e)
HADOOP-11312. Fix unit tests to not use uppercase key names.

(cherry picked from commit bcd402ae380ead1234bfdfc53f485d3fb1391288)
Revert "HDFS-7404. Remove o.a.h.hdfs.server.datanode.web.resources. Contributed by Li Lu."

This reverts commit ad32886ae637c9a6d529a94798c75905ee6c51b3.
HDFS-7404. Remove o.a.h.hdfs.server.datanode.web.resources. Contributed by Li Lu.
HDFS-7406. SimpleHttpProxyHandler puts incorrect "Connection: Close" header. Contributed by Haohui Mai.