QPID-6154: [Java Broker] HA - Handle rollback of node when use of weak durability has allowed nodes to diverge

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1633407 13f79535-47bb-0310-9956-ffa450edef68
QPID-6173: [Java Broker] Disallow attribute updates to the BDBHAReplicaVirtualHost

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1633408 13f79535-47bb-0310-9956-ffa450edef68