[Systems] Shell account request procedure

[Bernie Innocenti]

After telling ~80 times the same things over and over, I finally got
around to document the preferred procedure for requesting a shell
account:

  http://wiki.sugarlabs.org/go/Sysadmin/Shell_account_request

Did I miss anything? Can something be simplified further?

-- 
   // Bernie Innocenti - http://codewiz.org/
 \X/  Sugar Labs       - http://sugarlabs.org/