How to: Broken panels on k8s-views-nodes when a node changes its IP address
To make this dashboard more convenient, there's a small variable hack to display `node` instead of `instance`.
Because of that, some panels could lack data when a node changes its IP address as reported in [#102](https://github.com/dotdc/grafana-dashboards-kubernetes/issues/102).

No easy fix for this scenario yet, but it should be a corner case for most people.
Feel free to reopen the issue if you have ideas to fix this.