Add test e2e helloworld module with default config text.

tests/configs/modules/helloworld/helloworld_default.js

@@ -0,0 +1,31 @@
+/* Magic Mirror
+ *
+ * Test config sample module hello world default config
+ *
+ * By Rodrigo Ramírez Norambuena https://rodrigoramirez.com
+ * MIT Licensed.
+ */
+
+var config = {
+	port: 8080,
+	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
+
+	language: "en",
+	timeFormat: 24,
+	units: "metric",
+	electronOptions: {
+		webPreferences: {
+			nodeIntegration: true,
+		},
+	},
+
+	modules: [
+		{
+			module: "helloworld",
+			position: "bottom_bar"
+		}
+	]
+};
+
+/*************** DO NOT EDIT THE LINE BELOW ***************/
+if (typeof module !== "undefined") {module.exports = config;}