Code review comment for lp:~allenap/maas/ntp-prefer-nearby-servers--bug-1675095

So, I've tested this and seems to work as expected. I only, however, tested for commissioning and deployment and didn't test for enlistment.

IIRC, for enlistment, we would use the Region IP address the rack is connected to instead of the rack controller IP address.

This doesn't seem to change that, but I just want to make sure that is the case.