[ONOS-2096] Let GUI support tunnel
1. add a TunnelViewMesageHandler to handle message from the client.
2. add a tunnel view to show tunnel information on the GUI

Change-Id: I1d9a73c0e4e8ed1a55cdbef09426995989c4e76a
diff --git a/web/gui/src/main/webapp/app/view/tunnel/tunnel.js b/web/gui/src/main/webapp/app/view/tunnel/tunnel.js
new file mode 100644
index 0000000..5cde045
--- /dev/null
+++ b/web/gui/src/main/webapp/app/view/tunnel/tunnel.js
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ ONOS GUI -- Host View Module
+ */
+
+(function () {
+    'use strict';
+
+    angular.module('ovTunnel', [])
+    .controller('OvTunnelCtrl',
+        ['$log', '$scope', '$sce', 'FnService', 'TableBuilderService',
+
+        function ($log, $scope, $sce, fs, tbs) {
+            tbs.buildTable({
+                scope: $scope,
+                tag: 'tunnel'
+            });
+
+            $scope.$watch('tableData', function () {
+                if (!fs.isEmptyObject($scope.tableData)) {
+                    $scope.tableData.forEach(function (tunnel) {
+                        //tunnel.direction = $sce.trustAsHtml(tunnel.direction);
+                    });
+                }
+            });
+
+            $log.log('OvTunnelCtrl has been created');
+        }]);
+}());