Little refactor of BNG integration and new bng-api version

Change-Id: Id06008f4f0888e8e81c134a368e3c5ea54291a5d
diff --git a/src/main/java/org/opencord/kafka/integrations/BngPppoeKafkaIntegration.java b/src/main/java/org/opencord/kafka/integrations/BngPppoeKafkaIntegration.java
index ea91c8d..17b7088 100644
--- a/src/main/java/org/opencord/kafka/integrations/BngPppoeKafkaIntegration.java
+++ b/src/main/java/org/opencord/kafka/integrations/BngPppoeKafkaIntegration.java
@@ -40,6 +40,16 @@
 @Component(immediate = true)
 public class BngPppoeKafkaIntegration extends AbstractKafkaIntegration {
 
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected EventBusService eventBusService;
+
+    @Reference(cardinality = ReferenceCardinality.OPTIONAL,
+            policy = ReferencePolicy.DYNAMIC,
+            bind = "bindPppoeBngControl",
+            unbind = "unbindPppoeBngControl")
+    protected volatile PppoeBngControlHandler ignore;
+    private final AtomicReference<PppoeBngControlHandler> pppoeBngControlRef = new AtomicReference<>();
+
     private static final String TOPIC_PPPOE = "bng.pppoe";
     private static final String TIMESTAMP = "timestamp";
     private static final String EVENT_TYPE = "eventType";
@@ -52,17 +62,6 @@
 
     private final PppoeEventListener pppoeEventListener = new InternalPppoeListener();
 
-    private final AtomicReference<PppoeBngControlHandler> pppoeBngControlRef = new AtomicReference<>();
-
-    @Reference(cardinality = ReferenceCardinality.MANDATORY)
-    protected EventBusService eventBusService;
-
-    @Reference(cardinality = ReferenceCardinality.OPTIONAL,
-            policy = ReferencePolicy.DYNAMIC,
-            bind = "bindPppoeBngControl",
-            unbind = "unbindPppoeBngControl")
-    protected volatile PppoeBngControlHandler pppoeBngControlHandler;
-
     protected void bindPppoeBngControl(PppoeBngControlHandler incomingService) {
         bindAndAddListener(incomingService, pppoeBngControlRef, pppoeEventListener);
     }