NO-JIRA: [Java Broker] HA Downgrade logging of com.sleepycat.je.rep.utilint.BinaryProtocol.ProtocolException

It seems this exception can legitimately occur when a node checks (DbPings) a node that is being brought down

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1622845 13f79535-47bb-0310-9956-ffa450edef68
QPID-6074: [Java Broker] BDB HA VHN implement to use context variables rather than system properties to control timeouts etc

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1622846 13f79535-47bb-0310-9956-ffa450edef68