Define the new Intent Framework APIs (Intent Service)

- Define the base Intent class and sub-classes required in SDN-IP
- IntentService provides the APIs for application developers
- IntentExtensionService enables to define application specific intent types
- Provide event handling mechanism via IntentEventListener

This is for ONOS-1654.

Change-Id: Id1705f1fbc1acd4862b33fd9ab97aafe2e84a685
diff --git a/src/main/java/net/onrc/onos/api/newintent/InstallableIntent.java b/src/main/java/net/onrc/onos/api/newintent/InstallableIntent.java
new file mode 100644
index 0000000..b31375d
--- /dev/null
+++ b/src/main/java/net/onrc/onos/api/newintent/InstallableIntent.java
@@ -0,0 +1,8 @@
+package net.onrc.onos.api.newintent;
+
+/**
+ * Abstraction of an intent that can be installed into
+ * the underlying system without additional compilation.
+ */
+public interface InstallableIntent extends Intent {
+}