Registier Frequency to Kryo

Change-Id: I4e91c4f48197ed2aa46d6458e1f397eea3468b8f
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 379249d..c07448f 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
@@ -343,6 +343,12 @@
         testSerializable(new DefaultLinkResourceAllocations(request, allocations));
     }
 
+
+    @Test
+    public void testFrequency() {
+        testSerializedEquals(Frequency.ofGHz(100));
+    }
+
     @Test
     public void testLambdaConstraint() {
         testSerializable(new LambdaConstraint(Lambda.valueOf(1)));