Code review comment for lp:~robertcarr/mir/implement-client-credentials

> Gerry: I'm having some difficulty figuring out how this session name setting
> bit should work. So I think in the mean time, we can progress with this, and
> the limitation that the app only allows one app to be in the 'launching' state
> at a time (to prevent authentication races).
Ok, I can work with this for now.