-import org.opendaylight.controller.clustering.services.ICoordinatorChangeAware;
-import org.opendaylight.controller.clustering.services.IListenRoleChange;
-import org.opendaylight.controller.clustering.services.ListenRoleChangeAddException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.util.Dictionary;
-import java.util.Collections;
-import java.util.HashSet;
-import org.apache.felix.dm.Component;