expose and use size-only in data sync s3 sync paths

[rpmcginty]

Details

• update s3 functions to support size_only check in sync_paths
• update data_sync functions to utilize new size_only (and force) fields
• relies on updating s3 and data-sync models aibs-informatics-core#4

Why is this necessary?

For merscope analysis, the data sync fails for repeated downloads from aws s3 buckets in Storage-AIBS account. It fails to verify data already written to efs locations because the s3 buckets use server side encryption and we cannot generate ETags effectively.

The solution is to allow for data sync to use size_only when doing comparisons. This is considered a near-term fix.

Testing

• ran unit tests successfully when paired with changes in aibs-informatics-core