title: Specify Vagrantfile path explicity, if not plugin
body: <p>Is there any way to explicity specify the path of a Vagrantfile? My company wants to do something like this: For testing on a confluence machine, type a command like <code>vagrant spinup confluence</code>, and then point that to a Vagrantfile in a different directory that contains the confluence environment, and then brings up all of these machines. </p>
  
  <p>However, it doesn't look like there is any way to explicitly state what Vagrantfile to use, and I'm somewhat (very) new at ruby, so I'm having a hard time writing my own plugin for it. Does anyone have recommendations on what to do? Or has anyone done something similar to this?</p>