changed the  directive for ensuring virtual hosts config go be  instead

This PR looks to resolve #29. It seems we were using the `file` directive. According to the docs this only is meant to make changes to a file that's already exits but doesn't copy files. I've changed this to use the `copy` directive.

http://docs.ansible.com/file_module.html

I'm still blocked by #27 from doing a full `vagrant up` however.