Fix s3 ETags
A sufficiently large configuration value for multipart_threshold solved the problem. I also set my localmultipart_chunksize` big enough too just to be safe.
aws configure set default.s3.multipart_threshold 128MB
aws configure set default.s3.multipart_chunksize 128MBI'll bump these values up in the data release scripts in rcmip/rcmip as well