Add PUE to SCI dashboard

[raymundovr]

What type of PR is this?

kind/documentation
kind/enhancement

What this PR does / why we need it:

GSF SCI specification states that cloud computing operations should include the efficiency of the data center where the software runs in the calculation, see here. This efficiency is measured by the Power Usage Effectiveness (PUE).

This PR adds the PUE to the calculation shown in the dashboard and makes some additions to the documentation to include information about it.

Which issue(s) this PR fixes:

None

[raymundovr]

Hi @nikimanoledaki @rossf7 this is ready for review :)

[rossf7]

@raymundovr Awesome, thanks for adding

Left some minor comments but then looks good. We'll most likely merge this from the 🚆 on Monday :D

[raymundovr]

@rossf7 Thank you for checking this, all resolved. Sorry for the multiple commits, was trying to resolve using the Github tools but forgot about the sign-off.

[nikimanoledaki]

This is great, thank you for adding the PUE, @raymundovr! Really good call 😄

My only feedback is that I would make PUE part of E as this is also the guidance from the SCI documentation which you linked to:

If the boundary includes on-premise and/or cloud data center operations, E should take into account the efficiency of the data center, including cooling and other energy consumption necessary to operate a data center. The data center's energy efficiency is usually available as a PUE (Power Usage Effectiveness) value.

Left a couple of comments to address this. I'm open to discussing this further, let me know what you think!

[raymundovr]

Hi @nikimanoledaki
Noticed that in the docs the PUE was already removed from the equation. To align it, I went with the proposed change for the falco-sci.yaml as well.
This resolves with your suggested changes.

[nikimanoledaki]

@raymundovr thank you for your patience and apologies for the delay! LGTM 🎉 💚