Send 'useRoomAsSharedDocumentName' option to Jicofo

modules/xmpp/moderator.js

             name: 'simulcastMode',
             value: 'rewriting'
         }).up();
+
+    if (this.options.conference.useRoomAsSharedDocumentName !== undefined) {
+        elem.c(
+            'property', {
+                name: 'useRoomAsSharedDocumentName',
+                value: this.options.conference.useRoomAsSharedDocumentName
+            }).up();
+    }
     elem.up();
     return elem;
 };