Adopted rescue file list for sysconfig-0.81 split

Adopted rescue file list for sysconfig-0.81.x, which has been
splitted into sysconfig, udevmountd, sysconfig-netconfig and
sysconfig-network packages.
Cleaned up setting of MODIFY_RESOLV_CONF_DYNAMICALLY

The MODIFY_RESOLV_CONF_DYNAMICALLY variable does not exists
on 11.x / sles11 any more, removed hook from root file list.
Merge pull request #2 from mtomaschewski/sysconfig-split

Adopted for splitted sysconfig package