Implemented WebSockets for GUI2

Change-Id: I4776ce392b1e8e94ebee938cf7df22791a1e0b8f
diff --git a/web/gui2/src/main/webapp/app/onos.component.html b/web/gui2/src/main/webapp/app/onos.component.html
index 566c972..42d2bdd 100644
--- a/web/gui2/src/main/webapp/app/onos.component.html
+++ b/web/gui2/src/main/webapp/app/onos.component.html
@@ -1,6 +1,8 @@
 <div style="text-align:center" onosDetectBrowser>
     <onos-mast></onos-mast>
     <onos-nav></onos-nav>
+    <onos-veil #veil></onos-veil>
+    <div>{{ wss.setVeilDelegate(veil) }}</div>
     <router-outlet></router-outlet>
 </div>