update redhat rpm and archlinux pkg

Add --reason to rpm post installation segment.  The status change from
unknown to enabled is also moved to place where it happens only at a time
of installation, that means unknown status is not changed to enabled at
upgrade.

The archlinux package had incorrect locale state directory path, and
unnecessary systemd enabling.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
update pre script to have all existing command line options

Add also iptables save to set and remove rules functions.  That makes the
rules to presist over reboots, which is quite important f5gs is used to
protect system state at times of system upgrades.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>