HBASE-10259 [0.94] Upgrade JUnit to 4.11

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HBASE-8912 [0.94] AssignmentManager throws IllegalStateException from PENDING_OPEN to OFFLINE

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1554933 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10249 Intermittent TestReplicationSyncUpTool failure (Demai Ni)

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