Create separate compute instances for canary and a baseline

[MFatigati]

This way, we could see the system level metrics of each instance, i.e., how the container taxes the CPU of the respective instance. Right now that is not able to be discerned, since containers are running alongside other containers. Things we would have to do:

1. know the name of the newly created nodes.
2. use a constraint label to place the canary and baseline on separate instances
3. inform the user which instances housed the canary and baseline
4. tear down both compute instances when the canary was finished