title: where is the bundle:install command in capistrano deployment rails3.2 app?
body: <p>I'm trying to deploy a rails 3.2 app using capistrano and rbenv on prod server.</p>
  
  <p>Bundle is failing so I want to override the <code>bundle:install</code> callback hook but I couldn't find the method in the capistrano gem sorce.</p>
  
  <p>Where/which file does this declared ?</p>