mod_firewall: Fix to find scripts when installed with plugin installer
Extra resources are stored in a different path by luarocks, not
alongside the code as this code assumed.
Thanks eTaurus
module:set_global();
local log = _G.log;
module:add_timer(60-os.date("%S"), function (now)
log("info", "-- MARK --");
return 90 - ((now + 30) % 60);
end);