fixed portknocking with better logging and PORT_LIST constant
fixed portknocking with better logging and PORT_LIST constant

Tesi-Luca-Davide/ryu,OpenState-SDN/ryu,haniehrajabi/ryu,haniehrajabi/ryu,Tesi-Luca-Davide/ryu,OpenState-SDN/ryu,haniehrajabi/ryu,OpenState-SDN/ryu,haniehrajabi/ryu,Tesi-Luca-Davide/ryu,Tesi-Luca-Davide/ryu,OpenState-SDN/ryu,haniehrajabi/ryu,Tesi-Luca-Davide/ryu,OpenState-SDN/ryu