Code review comment for lp:~newell-jensen/maas/fix-1665839

> Can you explain why you only care about the first machine you find in
> current_machines?

There will only be a difference of one machine and that difference is the new machine that was just created in the RSD Pod.

> And if not, checking that the list contains what you expect is a good idea.

The list will be more than 1 item, so checking as is done is what we are doing.