Grabbing user input in the %pre section using the python snack library

[Glenn Bailey]

> In my opinion, kickstarts should be completely automated with no user
> input.  I'd recommend looking into a provisioning system like Cobbler,
> which allows you to setup all the information about the system your
> building before the kickstart begins.

I do use Cobbler, this is a fallback method for when the server cannot query our config management database or does not have an entry yet ..