[ONOS-6982] Implement OpenStackNetworking UI Service

- This implements the UI service for OpenStack Netwrorking App
- When mouse is over host or device, based on VNI,the UI highlights related hosts, links and devices
- The UI also supports flow trace functionality

Change-Id: I1944f3237cc112ed5c5e0d19351759cc66145881
diff --git a/apps/openstacknetworkingui/src/main/resources/app/view/sonaTopov/sonaTopov.html b/apps/openstacknetworkingui/src/main/resources/app/view/sonaTopov/sonaTopov.html
new file mode 100644
index 0000000..8d31977
--- /dev/null
+++ b/apps/openstacknetworkingui/src/main/resources/app/view/sonaTopov/sonaTopov.html
@@ -0,0 +1,4 @@
+<!-- partial HTML -->
+<div id="ov-sona-topov">
+    <p>This is a hidden view .. just a placeholder to house the javascript</p>
+</div>