Csala f gh210 customizable quickstart

Hi Dariusz,

As we discussed some weeks ago I did some changes in the quickstart command in order to be able to specify the cluster name and the number of servers to be created in the when the command is issued.

I would like to continue working on this and add some further options such as IPs and port numbers to bind to, and maybe look at the deployment of some servers over ssh.
However I guess it's better if I commit my parts in small bits.

Please let me know if there's something wrong in the code changes and I will fix them.

Regards,
Carles (in the discussion list I used an account name Coeuz :-)