Design / evaluate exporting to a time-series DB

[ilmanzo]

We want to tipically track the coverage trend over the time, so it would be nice to export coverage data to a DB like influx or prometheus . Primary Key will likely be the binary image name . Let's collect some ideas and/or POC implementations

[ilmanzo]

Idea for a workflow:

openQA → push metrics → Grafana → export PNG/SVG → GitHub Pages → public website