Fix sentinel 2 cog prefix

[kylebarron]

with S2COGReader('S2B_12SYJ_20200901_0_L2A') as scene:
    pass

currently errors with a NoSuchKey exception. This is because the directory structure of the bucket changed

This key exists:

s3://sentinel-cogs/sentinel-s2-l2a-cogs/12/S/YJ/2020/9/S2B_12SYJ_20200901_0_L2A/

[vincentsarago]

@kylebarron can you update the tests please!

[vincentsarago]

👋 @matthewhanson will there be any other change in the bucket?

side question: are the stac items up to date?

[matthewhanson]

@vincentsarago @kylebarron The only change going forward will be the removal of the older prefix that starts with acquisitionYear.

The STAC records should be up to date, although in the next few weeks there will be some small fixes and updates to the metadata, I don't have a complete list of those yet.

[vincentsarago]

thanks @matthewhanson that's great.

from rio-tiler-pds POV metadata change won't impact us because we only use the assets and bbox info https://github.com/cogeotiff/rio-tiler-pds/blob/master/rio_tiler_pds/sentinel/aws/sentinel2.py#L232-L235