* win_setup: Add Product ID and Product Key in facts
So this is actually a very nice way to get product key information from
systems collected centrally.
Especially with systems that have been upgraded from Windows 7 or
Windows 8 to Windows 10 may not have a valid Windows 10 product
license key printed anywhere, it was a digital license.
If you ever have to reinstall the system, you may recover the system
from the recovery partition, or the original media, but cannot upgrade
to Windows 10 for free. By collecting the product key, one can always
reinstall your free Windows upgrade.
My only question is, do we want this to be part of the default facts, as
it may be considered important information. Or should we make a special
**win_product_key_facts** ?
* Add ACPI product key support
* Add integration test
* Remove Get-ProductKey function, move inline
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