Rename KryoPool -> KryoNamespace

Change-Id: Ife1c311b40eaab133bb3b8dd3314b98c60b4411d
diff --git a/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoSerializer.java b/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoSerializer.java
index 3920dd6..8142e57 100644
--- a/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoSerializer.java
+++ b/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoSerializer.java
@@ -1,6 +1,6 @@
 package org.onlab.onos.store.serializers;
 
-import org.onlab.util.KryoPool;
+import org.onlab.util.KryoNamespace;
 import java.nio.ByteBuffer;
 
 /**
@@ -8,7 +8,7 @@
  */
 public class KryoSerializer implements StoreSerializer {
 
-    protected KryoPool serializerPool;
+    protected KryoNamespace serializerPool;
 
     public KryoSerializer() {
         setupKryoPool();
@@ -18,8 +18,8 @@
      * Sets up the common serialzers pool.
      */
     protected void setupKryoPool() {
-        serializerPool = KryoPool.newBuilder()
-                .register(KryoPoolUtil.API)
+        serializerPool = KryoNamespace.newBuilder()
+                .register(KryoNamespaces.API)
                 .build()
                 .populate(1);
     }