backup.pl: Fix for bug#11048 - add script for adding pass/no pass to ovpnconfig from...

backup.pl: Fix for bug#11048 - add script for adding pass/no pass to ovpnconfig from backup

- A script was added to the update.sh script to add pass/no pass to the ovpnconfig entries
   but I forgot that this was also needed in the backup.pl file to add those statuses into
   any ovpnconfig file restored from a backup before the pass/no pass entries were added.
- This patch corrects that oversight.
- Confirmed by testing on my vm. Before the script added to backup.pl a restore of older
   ovpnconfig ended up not showing any icons or status elements. With the script in
   backup.pl confirmed that the restored ovpnconfig showed up in the WUI page correctly
   with the right icons and with the status elements correctly displayed.

Tested-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>