update to use harmonized s2

[weiqi-tori]

https://gfw.atlassian.net/browse/CIF-207

[S-AI-F]

Looks good for me. @kcartier-wri can you check and approve if it is ok?

[kcartier-wri]

Looks good and thanks for addressing this so quickly. :) BTW, I confirmed that running the code for a period of time before the January 24th 2022 date, mentioned in the GEE article, does return results.

Moving forward we'll need to use the harmonized version on new layers, such as for NDVI.

@S-AI-F - How does this affect notebooks? Do they need to be updated as well and updated results written out to the WorldResources AWS account?

[S-AI-F]

@kcartier-wri We don't need to update the notebook. We are not planning to maintain them or ruse them The goal is to move all the notebooks into the new framework structure. We should keep them as they are to know how we obtained the old results. We are planning to update the technical note to redirect to the new cif github once all indicators and metrics are implemented.