Register FlowId to Kryo

Change-Id: Ic6bff17cff78f8b95350a97e89782e9c6ae8ce7e

@@ -26,6 +26,7 @@ import org.onlab.onos.net.PortNumber;
 import org.onlab.onos.net.device.DefaultDeviceDescription;
 import org.onlab.onos.net.device.DefaultPortDescription;
 import org.onlab.onos.net.flow.DefaultFlowRule;
+import org.onlab.onos.net.flow.FlowId;
 import org.onlab.onos.net.host.DefaultHostDescription;
 import org.onlab.onos.net.host.HostDescription;
 import org.onlab.onos.net.link.DefaultLinkDescription;
@@ -86,7 +87,8 @@ public final class KryoNamespaces {
                     HostId.class,
                     HostDescription.class,
                     DefaultHostDescription.class,
-                    DefaultFlowRule.class
+                    DefaultFlowRule.class,
+                    FlowId.class
                     )
             .register(URI.class, new URISerializer())
             .register(NodeId.class, new NodeIdSerializer())

@@ -25,6 +25,7 @@ import org.onlab.onos.net.Link;
 import org.onlab.onos.net.LinkKey;
 import org.onlab.onos.net.PortNumber;
 import org.onlab.onos.net.SparseAnnotations;
+import org.onlab.onos.net.flow.FlowId;
 import org.onlab.onos.net.provider.ProviderId;
 import org.onlab.packet.ChassisId;
 import org.onlab.packet.IpAddress;
@@ -192,6 +193,11 @@ public class KryoSerializerTest {
     }
 
     @Test
+    public void testFlowId() {
+        testSerialized(FlowId.valueOf(0x12345678L));
+    }
+
+    @Test
     public void testAnnotations() {
         // Annotations does not have equals defined, manually test equality
         final byte[] a1Bytes = serializer.encode(A1);