Update fig vagrant

This fixes my issues getting the JRuby version of Panoptes running in Docker. Basically JBundler adds a `.jbundler` directory with classpath information. It's is specific to a host machine, so it needs to be deleted before the rails app is run so jbundler correclty recreates it. 
This is related to the cellect issue. I just wanted it to start faster, so cellect wouldn't crash.