Add detection for ostree-based systems and warn users about losing changes #2053
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On ostree-based systems, users can use dnf to customize the environment but those changes will be lost at the next ostree-based image update. If you want to retain changes between ostree-updates you need to make use of rpm-ostree right now.
All this patch does is add a function to detect systems managed this way and present warnings before dnf operations that modify the system. I display the warning at the beginning of the output, but maybe that should be after any other output is on the display.