There are several issues here, this fixes 2 of them.
1. arch and DD-net are no longer used as part of the DD-x path for the extracted rpms.
2. addRepo's refresh lambda has been broken for a long time, it is only used by driver
updates so wasn't noticed in Fedora.
A 3rd problem is that the drivers are extracted 3 times instead of once, resulting in
/run/install/DD-1,DD-2,DD-3 still working on figuring that one out.
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To view this pull request on github, visit
https://github.com/rhinstaller/anaconda/pull/337