Merged from trunk. HDFS-4286. Changes from BOOKKEEPER-203 broken capability of including bookkeeper-server jar in hidden package of BKJM. Contributed by Rakesh R.

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Merged from trunk. HDFS-4221. Remove the format limitation point from BKJM documentation as HDFS-3810 closed. Contributed by Rakesh R.

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Mreged from trunk. HDFS-5411. Update Bookkeeper dependency to 4.2.3. Contributed by Rakesh R.

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