Puppet seems to have some issue with creating a symlink in
/etc/sysconfig on CentOS, where it creates the link on the first run and
then corrects the seltype on the second run, breaking idempotency tests.
If we make sure to explicitly set it up front, puppet doesn't get
confused. This patch also removes the mode setting since setting the
permissions mode on a symlink doesn't make sense.
Change-Id: I7019c48220425fc583b9b431eff08a6261ee2ebc