firewall: Fixes bug12981 - add if loop to log or not log dropped hostile traffic

firewall: Fixes bug12981 - add if loop to log or not log dropped hostile traffic

- This v3 version now has two if loops allowing logging of incoming drop hostile or
   outgoing drop hostile or both or neither.
- Dependent on the choice in optionsfw.cgi this loop will either log or not log the
   dropped hostile traffic.

Fixes: bug12981
Tested-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Bernhard Bitsch <bbitsch@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>