Add support for deploying Windows instances

[nkakouros]

RIght now, if I set config.vm.communicator = "winrm", I get a this warning on vagrant up:

==> windows-instance: Warning! The Google provider doesn't support any of the Vagrant                                                                                                                                                    
==> windows-instance: high-level network configurations (`config.vm.network`). They                                                                                                                                                      
==> windows-instance: will be silently ignored. 

This results in vagrant up getting stuck waiting for an ssh connection.

[Temikus]

@tterranigma I'm not familiar with WinRM enough to build this out quickly as it seems this needs specific capability to be built out, like in the Azure provider: https://github.com/Azure/vagrant-azure

I'm more than happy to review a pull request and/or help with building it out if you're willing to assist.

[nkakouros]

Hey @Temikus , I am sorry but I no longer use this project. Thank you for you work all this time.

[dvanbrug]

@Temikus, would you still be willing to help with a pull request on this? I've got something that seems to work but would appreciate having someone more familiar with the codebase taking a look.

[Temikus]

@dvanbrug Definitely. Although I may need a week+ to address it as my life is a bit hectic at the moment.

[dvanbrug]

@Temikus, Great! No worries on the timeframe. I'll submit a pull request as a starting point and we can go from there.