HBASE-1762 Remove concept of ZooKeeper from HConnection interface

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HBASE-8498 PB WAL reading is broken due to some partial reads

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1480512 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8514 There's an orig file in 0.95

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