rpm: order sysctl/sysusers/tmpfiles execution before package scriptlets

P>1000000 is *before* "normal" scriptlets, P<1000000 is *after*. I think it
makes sense to do stuff like execution of sysctl/sysusers/tmpfiles configuration
before package scriptlets. I think that was the intent, but a single digit got
dropped ;(

Also, let's reorder the scriptlets in the file to match execution order, to
make it easier to see what is going on.

Most of those may happen in any order, but there are some exceptions:
tmpfiles should be after sysusers,
udevadm --reload should be after hwdb.