Add Node, Slice and Instance API tests

Change-Id: I3c3b9e8fbb7e485689bd8abac042b2264f6e51e3
diff --git a/src/test/cord-api/Tests/data/Instance.json b/src/test/cord-api/Tests/data/Instance.json
new file mode 100644
index 0000000..9279d83
--- /dev/null
+++ b/src/test/cord-api/Tests/data/Instance.json
@@ -0,0 +1,20 @@
+{
+    "InstanceInfo": [
+        {
+            "name": "test-instance-1",
+            "image": 1,
+            "slice": 1,
+            "deployment": 1,
+            "node": 1,
+            "creator" : 1
+        },
+        {
+            "name": "test-instance-2",
+            "image": 2,
+            "slice": 2,
+            "deployment": 2,
+            "node": 2,
+            "creator" : 2
+        }
+    ]
+}