basearch is ppc64le so we needs to check for that in addition to ppc64.
Resolves:rhbz#1136490
(cherry picked from commit 72357bf96b6b016c3a39b2af51eaf5cf724a0928)
live media isn't exactly the same as the Anaconda install media. Right
now this amounts to needing a root= cmdline argument but in the future
there may be other differences.
This also reverts 5437557846 on the new copies of the templates.