QPID-5409: Fix LocalReplicationNode#setAttribute, ignore exception thrown by ReplicatedEnvironmentFacade in LocalReplicationNode#getAttribute

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha@1565369 13f79535-47bb-0310-9956-ffa450edef68
QPID-5409: Environment thread is now used to perform set designated primary/set electable group override/set node prioriy

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha@1565370 13f79535-47bb-0310-9956-ffa450edef68