Description
Make the sparkline charts in the UI source their data from a Prometheus instance that has suitable labels*.
Also, if possible, make the "glass half full" overlay on nodes come from Prometheus too.
Benefit will be that probe can stop gathering this data, which is cpu-intensive, and stop uploading it, which is network-intensive. I expect it will make delta reports (#3677) much smaller.
By default Scope shows 15 seconds of data at 1-second resolution; generally Prometheus is run with 15-second or 1-minute resolution so the Scope charts would have to show a much bigger time window. I think this is a benefit, since the 15-second charts either dodge around too fast to gather much meaning, or are completely flat.
* probably "suitable labels" means this will be Kubernetes-only (at least as an MVP).