QPID-3603: Make link maintenance interval configurable. HA code needs faster reconnects than federation. This is a temporary solution till we have a more robust and rapid reconnect mechanism in place. git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/qpid-3603-6@1244106 13f79535-47bb-0310-9956-ffa450edef68