Oops! Fix updateLink() function in topology view.
(also add linkupdate scenario).

Change-Id: Ic0f6753745e43c5fc76a6cb180a0c8a66178c657
diff --git a/web/gui/src/test/_karma/ev/linkupdate/scenario.json b/web/gui/src/test/_karma/ev/linkupdate/scenario.json
new file mode 100644
index 0000000..42fe376
--- /dev/null
+++ b/web/gui/src/test/_karma/ev/linkupdate/scenario.json
@@ -0,0 +1,10 @@
+{
+  "title": "Link Update scenario",
+  "description": [
+    "Add two devices and one link (auto).",
+    "Send a couple of updateLink events."
+  ],
+  "params": {
+    "lastAuto": 5
+  }
+}