WDK is not available on Windows VMs

Hello!

We are trying to build windows drivers on Travis and our builds fail because WDK is not installed on Windows images.

Is it possible to have Windows 10 WDK (https://docs.microsoft.com/en-us/windows-hardware/drivers/download-the-wdk) and Windows 7 WDK (https://www.microsoft.com/en-us/download/details.aspx?id=11800) preinstalled on Windows VMs?

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