QPID-5413: Improve Ha virtual host UI

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha@1553695 13f79535-47bb-0310-9956-ffa450edef68
QPID-5412: Stop saving virtual host state in conviguration store

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha@1553696 13f79535-47bb-0310-9956-ffa450edef68