fix test following customName for DAGNode to Node (SOFA PR2395)

Author: fredroy

bindings/Sofa/tests/Core/Base.py

@@ -116,7 +116,7 @@ def test_addNewDataFromParent_brokenLink(self):
 
     def test_getClassName(self):
         root = create_scene("root")
-        self.assertEqual(root.getClassName(), "DAGNode")
+        self.assertEqual(root.getClassName(), "Node")
 
     def test_getTemplateName(self):
         root = create_scene("root")