[ONOS-5916] Add interfaces with adaptor for mapping management app

Change-Id: I44cec28ec50b77d2a40c3650b59c96f02ec48f4f
diff --git a/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/DistributedMappingStore.java b/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/DistributedMappingStore.java
index 8a48762..6e3f445 100644
--- a/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/DistributedMappingStore.java
+++ b/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/DistributedMappingStore.java
@@ -16,9 +16,24 @@
 package org.onosproject.mapping.impl;
 
 import org.onosproject.mapping.MappingStore;
+import org.onosproject.mapping.MappingStoreDelegate;
 
 /**
  * Implementation of a distributed store for managing mapping information.
  */
 public class DistributedMappingStore implements MappingStore {
+    @Override
+    public void setDelegate(MappingStoreDelegate delegate) {
+
+    }
+
+    @Override
+    public void unsetDelegate(MappingStoreDelegate delegate) {
+
+    }
+
+    @Override
+    public boolean hasDelegate() {
+        return false;
+    }
 }
diff --git a/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/MappingManager.java b/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/MappingManager.java
index 6da2791..7668375 100644
--- a/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/MappingManager.java
+++ b/apps/mappingmanagement/mgr/src/main/java/org/onosproject/mapping/impl/MappingManager.java
@@ -15,10 +15,20 @@
  */
 package org.onosproject.mapping.impl;
 
+import org.onosproject.mapping.MappingListener;
 import org.onosproject.mapping.MappingService;
 
 /**
  * Implementation of mapping management service.
  */
 public class MappingManager implements MappingService {
+    @Override
+    public void addListener(MappingListener listener) {
+
+    }
+
+    @Override
+    public void removeListener(MappingListener listener) {
+
+    }
 }