[Kubernetes Integration] Kubernetes pod Dashboard should derivative for Network usage

As of now the Kubernetes Pod Dashboard in some visualizations like `Network Incoming/Outgoing Bytes metrics` shows the network usage of the pods by showing the raw values of continuously increasing counters:


So the graph is a slow monotone increasing until a pod is destroyed. Further, there is no easy way to check whether a new pod is using a non-negligible amount of network in a given period of time.

A derivative would make more sense, because it would allow us to check the rate over a period (e.g., 1 second, 1 minute etc.)

**Example**

- Before:

Pods that exists since forever are using more network than other newly created pod

- After (by using differences):

Afterward we see the pods that consumed more network in the given time-span.