Hardcoded node names in k8s deploy script

[copandrej]

Is node labeling necessary? I think this should be made more general so that the deployment script will work on different infrastructure.

https://github.com/sensorlab/agent-edge-autoscaling/blob/0b125c0767c67d97b90c38d46bdd2d82ff606345/scripts/microk8s/deploy_all.sh#L11-L14