VMWare does not support --parallel

I am not sure if this is a bug or just undocumented, but neither VMWare Fusion or VMWare workstation support the `--parallel` flag. We have received a few support tickets around this /cc @mitchellh.
There should be a list of providers that support parallel execution.  To be
honest, I bought the VMWare plugin assuming that it had parallel.  My
assumption was:  Well, VirtualBox doesn't support parallel, and Vagrant
recommends you use VMWare, so that must have parallel.  Since I found
nothing online contradicting that thought process, I bought it.

On Fri, Oct 17, 2014 at 11:26 AM, Mitchell Hashimoto <
notifications@github.com> wrote:

> In website/docs/source/v2/virtualbox/usage.html.md:
>
> >  read the general [basic usage](/v2/providers/basic_usage.html) page for
> >  providers.
> >
> >  The value to use for the `--provider` flag is `virtualbox`.
> > +
> > +The Vagrant VirtualBox provider supports parallel execution with the
>
> VirtualBox doesn't either. :(
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/mitchellh/vagrant/pull/4653/files#r19024021>.
>