IP Board Login Scanner Module

This module is an aux module for testing/brute forcing credentials against an IP Board installation.  I based the credentials being stored in the backend db off of aux/scanner/ftp/anonymous.rb since that just landed a day ago.

Hope that this helps!
Similar to what was pointed out on L89, I don't think this will cause the module to exit. This will return nil to ```run_host``` which will just try the next username and password combination.