protected void onDeploy(ViewEntity definition) {
    View view = definition.getView();
    if (view != null) {
      view.onDeploy(definition);
    }
  }
Sync given view with data in DB. Ensures that view data in DB is updated,
all instances changes from xml config are reflected to DB

@param view                view config from xml
@param instanceDefinitions view instances from xml
@throws Exception if the view can not be synced
ambari-server/src/main/java/org/apache/ambari/server/view/ViewRegistry.java