17 Beta TC2 DVD minimal install won't use packages from media

[John Reiser]

> Has been reproduced and reported in
> https://bugzilla.redhat.com/show_bug.cgi?id=804446 (cannot fresh install from
> DVD) against anaconda.

See the message subtree rooted at
  https://www.redhat.com/archives/anaconda-devel-list/2012-March/msg00152.html
The pair of packages
   anaconda-17.13-1.fc17.x86_64
   lorax-17.10-1.fc17.x86_64
dramatically changed the way that the anaconda installer is invoked.

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