Make some grafana labels shorter for graph readability

[teor2345]

Motivation

Some graphs are hard to read if:

• the labels are long, and
• the legend is on the right of the graph.

This is particularly important if prometheus is scraping multiple instances.

Solution

Make the labels shorter.

Review

Anyone can review this low-priority graph update.

Reviewer Checklist

• Graphs display ok
• New labels make sense

[teor2345]

Here's an example - the shorter labels and values still take up a lot of space.
(This just fits fullscreen on a widescreen monitor.)

[conradoplg]

Imported it on grafana and looks good.