add a traffic engineering use case and samples of NetworkGraph classes as test codes

Change-Id: Id655106309d032a2e99e26887db1836d2f598ef8
diff --git a/src/test/java/net/onrc/onos/ofcontroller/app/BaseApplication.java b/src/test/java/net/onrc/onos/ofcontroller/app/BaseApplication.java
new file mode 100644
index 0000000..6aa435c
--- /dev/null
+++ b/src/test/java/net/onrc/onos/ofcontroller/app/BaseApplication.java
@@ -0,0 +1,8 @@
+package net.onrc.onos.ofcontroller.app;
+
+/**
+ * This code is valid for the architectural study purpose only.
+ * @author Toshio Koide (t-koide@onlab.us)
+ */
+public interface BaseApplication {
+}