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/test/java/net/onrc/onos/api/newintent/TestableIntentService.java b/src/test/java/net/onrc/onos/api/newintent/TestableIntentService.java
new file mode 100644
index 0000000..27921de
--- /dev/null
+++ b/src/test/java/net/onrc/onos/api/newintent/TestableIntentService.java
@@ -0,0 +1,12 @@
+package net.onrc.onos.api.newintent;
+
+import java.util.List;
+
+/**
+ * Abstraction of an extensible intent service enabled for unit tests.
+ */
+public interface TestableIntentService extends IntentService, IntentExtensionService {
+
+    List<IntentException> getExceptions();
+
+}