Code review comment for lp:~frankban/lpsetup/urandom-hack

Thank you, Francesco. Please add an additional sentence to the help description that gives a serious warning about it. Draft of the kinds of things I'm thinking of: "This reduces the actual randomness of your system's random number generator and thereby reduces security. Use only if determined to be necessary for this machine, and only if the machine is only used for tasks identified as low-risk, such as running tests." Otherwise good.