BREAKING CHANGE
- stop_pods: neutralize the HPA as `HPAScaleToZero` may be in use (HPA may scale up the Deployment even if replicas=0), a more straightforward solution will
be available in the future see [here](https://github.com/kubernetes/enhancements/pull/2022). Of course `start_pods` repairs it. (encourage users to run this command to re-scale up).