libvirt/kvm/qemu support

[obilodeau]

After seeing recent performance discrepancies between kvm and virtualbox, I'm tempted to give another shot at kvm support.

I know that @ProloG-Shaman has done a PoC of it. I wonder if he still has the code somewhere...

I also saw that https://github.com/vagrant-libvirt/vagrant-libvirt has a lot of customization possibilities (CPU-level changes to pass pa-fish) and seems to support Windows now.

[ProloG-Shaman]

I still have the code, I'm looking over it and I'll submit a pull request.

[ProloG-Shaman]

I have added the KVM builder and changed, for now, the win10_x64_analyst.json. I've made a config.js which specifies KVM. The VM gets created correctly and launches, but then packer cannot connect to winRM and it stops there (even after waiting the 1h to timeout). I'll try and see what's not working.

[obilodeau]

You can push the code as a draft PR if you want. That way I'll be able to look at it and adjust.