Bug 668909 - Can't modify replication agreement in some cases
    
    https://bugzilla.redhat.com/show_bug.cgi?id=668909
    
    Description: Code to modify nsds5ReplicaPort in replication agreement
    was not implemented.  This patch adds it.
    
    When an agreement change is detected in conn_connect, it resets
    the values needed to make a connection including the port number.