Define Bandwidth class to represent bandwidth with explicit its unit

Change-Id: I863fea61fa5e70edfa53d11e720e400d100131c8
diff --git a/core/store/serializers/src/test/java/org/onosproject/store/serializers/KryoSerializerTest.java b/core/store/serializers/src/test/java/org/onosproject/store/serializers/KryoSerializerTest.java
index c93da2c..98ee193 100644
--- a/core/store/serializers/src/test/java/org/onosproject/store/serializers/KryoSerializerTest.java
+++ b/core/store/serializers/src/test/java/org/onosproject/store/serializers/KryoSerializerTest.java
@@ -366,6 +366,11 @@
     }
 
     @Test
+    public void testBandwidth() {
+        testSerializedEquals(org.onlab.util.Bandwidth.mbps(1000.0));
+    }
+
+    @Test
     public void testLambdaConstraint() {
         testSerializable(new LambdaConstraint(LambdaResource.valueOf(1)));
     }