BOOKKEEPER-750: Flake in BookieAutoRecoveryTest#testEmptyLedgerLosesQuorumEventually (ivank)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/bookkeeper/branches/branch-4.2@1599591 13f79535-47bb-0310-9956-ffa450edef68
Updating version numbers for 4.2.3 release

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/bookkeeper/branches/branch-4.2@1599600 13f79535-47bb-0310-9956-ffa450edef68