labelling lab labels all nodes so doesn't demonstrate things clearly

[augustrh]

In the labelling lab we add a label to all nodes in the "worker" machine pool.'
This labels every node we have as there is only one machine pool at this point of the lab.
We then deploy the app and ask the user to view the machine it landed on.
Finally we ask them to see if that machine is part of the labelled nodes.
But since we only have one machinepool and we labelled all the nodes in it wouldn't EVERY app land on one of those nodes?
It seems like we need to create a new machinepool. Label it. Then deploy to the label to ensure it lands on that new pool.
Apologies if I misunderstood the lab but it seems like we have missed creating or using a new machinepool