Cli: Add the chunk_size as a ddfs chunk option.
Cli: Add the chunk_size as a ddfs chunk option.

This should resolve issue 424.

pooya/disco,pombredanne/disco,discoproject/disco,pooya/disco,beni55/disco,ktkt2009/disco,pombredanne/disco,seabirdzh/disco,simudream/disco,pombredanne/disco,beni55/disco,pooya/disco,simudream/disco,ktkt2009/disco,seabirdzh/disco,ktkt2009/disco,beni55/disco,ErikDubbelboer/disco,ErikDubbelboer/disco,simudream/disco,oldmantaiter/disco,oldmantaiter/disco,pombredanne/disco,ErikDubbelboer/disco,simudream/disco,mwilliams3/disco,ktkt2009/disco,mozilla/disco,seabirdzh/disco,discoproject/disco,mwilliams3/disco,oldmantaiter/disco,mozilla/disco,seabirdzh/disco,discoproject/disco,mwilliams3/disco,seabirdzh/disco,oldmantaiter/disco,mwilliams3/disco,discoproject/disco,mozilla/disco,beni55/disco,mozilla/disco,beni55/disco,ktkt2009/disco,pombredanne/disco,pooya/disco,oldmantaiter/disco,simudream/disco,ErikDubbelboer/disco,ErikDubbelboer/disco,discoproject/disco,mwilliams3/disco