GUI -- Added routerId to AnnotationKeys; added test scenario for multi-homed hosts (routers).

Change-Id: Ief5f23fa1678152d5375a2b54fe5735c9632d588
diff --git a/web/gui/src/test/_karma/ev/multiHomed/ev_5_addLink_03_08.json b/web/gui/src/test/_karma/ev/multiHomed/ev_5_addLink_03_08.json
new file mode 100644
index 0000000..755255a
--- /dev/null
+++ b/web/gui/src/test/_karma/ev/multiHomed/ev_5_addLink_03_08.json
@@ -0,0 +1,16 @@
+{
+  "event": "addLink",
+  "payload": {
+    "id": "of:0000ffffffff0003/21-of:0000ffffffff0008/20",
+    "type": "direct",
+    "online": true,
+    "linkWidth": 2,
+    "src": "of:0000ffffffff0003",
+    "srcPort": "21",
+    "dst": "of:0000ffffffff0008",
+    "dstPort": "20",
+    "props" : {
+      "BW": "70 Gb"
+    }
+  }
+}