Code review comment for lp:~cprov/britney/testclient-api

Thanks for fixing the comments cprov.

> On point 2) I don't get the registry duplication, it's impossible, since it's
> a dictionary, perhaps you mean re-announcement ?
>
Point 2 was about a notification about my inline comment, not using make_key bit, which you've fixed.

And thanks a lot again for this MP. Whole lot different than what I proposed.