CORD Subscriber Demo - Support for loading local data files.

Change-Id: I902197c26060eb791d8ac872890be4268f0dd64c
diff --git a/apps/demo/cord-gui/src/main/resources/org/onosproject/cord/gui/sample.json b/apps/demo/cord-gui/src/main/resources/org/onosproject/cord/gui/sample.json
new file mode 100644
index 0000000..34ea246
--- /dev/null
+++ b/apps/demo/cord-gui/src/main/resources/org/onosproject/cord/gui/sample.json
@@ -0,0 +1,13 @@
+{
+  "comment": [
+    "This is a sample JSON File",
+    "Which can contain fake data."
+  ],
+  "fake": true,
+  "numbers": [ 1, 2, 3 ],
+  "map": {
+    "x": 100,
+    "y": 200,
+    "z": 32
+  }
+}