Consider adding WSL support to Vagrant.

[JoosuaKoskinen]

Vagrant is developing support for Windows Subsystem for Linux. The WSL support is now in beta and not all regular Vagrant features are supported in the environment. We should find out whether the features our Vagrant box requires are supported, what steps it would take to have our box work in WSL and is the WSL support worth the trouble of implementing.

The Vagrant WSL guide: https://developer.hashicorp.com/vagrant/docs/other/wsl

It does seem that to have synced folders (we need that), we must "opt-in" to supporting synced folders usage from VolFs file systems. I'm not exactly sure what that would actually require but if it's a simple enough change, I think it's worth implementing.

A customer has already tried to run our Vagrant box in WSL environment without success.