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/core/api/src/main/java/org/onlab/onos/net/packet/PacketStoreDelegate.java b/core/api/src/main/java/org/onlab/onos/net/packet/PacketStoreDelegate.java
new file mode 100644
index 0000000..6e19ad2
--- /dev/null
+++ b/core/api/src/main/java/org/onlab/onos/net/packet/PacketStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onlab.onos.net.packet;
+
+import org.onlab.onos.store.StoreDelegate;
+
+/**
+ * Packet store delegate abstraction.
+ */
+public interface PacketStoreDelegate extends StoreDelegate<PacketEvent> {
+}