Add shutdown_command like vsphere-iso

[arogarth]

There is a closed issue for this. But building Windows Templates are hard to generalize.

Running sysprep with "/quit" and let packer shutdown the vm via winrm will reset winrm settings and user credentials - so there are "Failed Login" messages in Event Logs and winrm cannot connect.

If setting communicator to "none" will try to shutdown the VM during installation process.

There seems to be no way to sysprep and generalize the VM using proxmox-iso.

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Description

A written overview of the feature.

Use Case(s)

Build Windows Server Templates with generlize.

[arogarth]

OK, I got it... Running a provisioner after actvating winrm works...

{
    "provisioners": [
        {
            "type": "powershell",
            "inline": [
                "& \"$($ENV:SystemRoot)\\System32\\Sysprep\\sysprep.exe\" /mode:vm /generalize /quit /oobe"
            ]
        }
    ]