No firewallchain autorequire for INPUT, OUTPUT and FORWARD when table is :filter to enable DROP policy without blocking

This modification allows to disable autorequire of firewallchain only for the following:
   INPUT:filter:...
   OUTPUT:filter:...
   FORWARD:filter:...

It allows to specify those firewallchains at the end of all firewall rules (in the my_fw::post for example) with a default DROP policy without blocking everything.