Fix Proxmox builder unhandled buildvar type (#10154)
Fix Proxmox builder unhandled buildvar type (#10154)

* Fix Proxmox builder unhandled buildvar type #10139

Co-authored-by: Calle Pettersson <4ad7e622e99d4b60f7651c6ba81a32badd69d9ce@users.noreply.github.com>
Co-authored-by: Adrien Delorme <041820db4935af51357d8f683c8d62fcdd41ffcd@icloud.com>
rnaveiras/packer,hashicorp/packer,pecigonzalo/packer,ricardclau/packer,mitchellh/packer,mitchellh/packer,pecigonzalo/packer,rnaveiras/packer,rnaveiras/packer,hashicorp/packer,ricardclau/packer,ricardclau/packer,rnaveiras/packer,rnaveiras/packer,mitchellh/packer,pecigonzalo/packer,mitchellh/packer,hashicorp/packer,ricardclau/packer,ricardclau/packer,rnaveiras/packer,hashicorp/packer,mitchellh/packer,ricardclau/packer,pecigonzalo/packer