[MIG] attachment_s3: Migration to 16.0#401

jjscarafia wants to merge 2 commits intocamptocamp:16.0camptocamp/odoo-cloud-platform:16.0from

adhoc-dev:16.0-t-attachment-s3-maqadhoc-dev/odoo-cloud-platform:16.0-t-attachment-s3-maqCopy head branch name to clipboard