iptables log is not available

!445 (merged) moved syslog configuration for sentinel-nikola from /etc/syslog-ng.d/ to /usr/share/syslog-ng/include/sentinel-nikola, however, it does not work as expected.

I need to move it back and restart syslog-ng service to make iptables kernel logs appear in /var/log/iptables.

Also, we should consider to add REJECT- as well as DROP-logs there.