Implemented multi-instance packet out.

We've defined a PacketStore abstraction through which outbound packets are
sent. The packet store has a simple implementation (basically a no-op) and a
distributed implementation on top of the cluster messaging service.

Change-Id: Ib32753314fe518ef1fd67c858db744b004539938
diff --git a/utils/misc/src/main/java/org/onlab/util/KryoNamespace.java b/utils/misc/src/main/java/org/onlab/util/KryoNamespace.java
index 66b09c3..d44ed14 100644
--- a/utils/misc/src/main/java/org/onlab/util/KryoNamespace.java
+++ b/utils/misc/src/main/java/org/onlab/util/KryoNamespace.java
@@ -115,10 +115,10 @@
     /**
      * Creates a Kryo instance pool.
      *
-     * @param registerdTypes types to register
+     * @param registeredTypes types to register
      */
-    private KryoNamespace(final List<Pair<Class<?>, Serializer<?>>> registerdTypes) {
-        this.registeredTypes = ImmutableList.copyOf(registerdTypes);
+    private KryoNamespace(final List<Pair<Class<?>, Serializer<?>>> registeredTypes) {
+        this.registeredTypes = ImmutableList.copyOf(registeredTypes);
         // always true for now
         this.registrationRequired = true;
     }