packaging: refactored on original SL6.5 kickstart

Refactored kickstart files in order to be closer to the
original kickstart files taken from SL6.5.
This allow us to understand the changes needed for oVirt Live
in order to ease the rebase for upcoming 6.6 and existing 7.0.

Also restored some lines from the original kickstart after
asking Ohad: they were removed accidentally

Change-Id: I0eecc9a5f9fb730f94c56f85141c0a725105daf9
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>