[ONOS-3833] Added data structure to store load balance path info

Change-Id: Icf73a7c91652c2532db889fb4df70232a16650a2
diff --git a/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java b/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
index 70335ba..9b7c987 100644
--- a/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
+++ b/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
@@ -34,7 +34,6 @@
 
 import javax.ws.rs.core.MediaType;
 
-import com.eclipsesource.json.Json;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -49,6 +48,7 @@
 import org.onosproject.vtnrsc.portpairgroup.PortPairGroupService;
 import org.onosproject.vtnweb.web.SfcCodecContext;
 
+import com.eclipsesource.json.Json;
 import com.eclipsesource.json.JsonObject;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
@@ -122,6 +122,17 @@
                     Objects.equals(this.portPairGroupId, portPairGroup.portPairGroupId()) &&
                     Objects.equals(this.tenantId, portPairGroup.tenantId());
         }
+
+        @Override
+        public void addLoad(PortPairId portPairId) {
+            // TODO Auto-generated method stub
+        }
+
+        @Override
+        public int getLoad(PortPairId portPairId) {
+            // TODO Auto-generated method stub
+            return 0;
+        }
     }
 
     /**