Add 's3:GetBucketLocation' permission to AWS bucket

[Will Johnson]

Can you please add the IAM Permission 's3:GetBucketLocation' in an IAM Bucket Policy to the bounding box annotated dataset hosted on AWS S3 (s3://open-images-dataset)?

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "PublicPermissions",
            "Effect": "Allow",
            "Principal": "*",
            "Action": [
                "s3:GetBucketLocation"
            ],
            "Resource": [
                "arn:aws:s3:::open-images-dataset"
            ]
        }
    ]
}

Given the current 'public-read' ACL present on the bucket, adding this permission doesn't expose any information that isn't already available. Specifically, the 's3:GetBucketLocation' permission only gives the bucket's 'x-amz-region', which is already available from HEAD Bucket requests and used under-the-hood by the aws cli.

Granting this permission will allow for the use of Google Cloud Storage Transfer Service to copy this dataset from AWS S3 to Google Cloud Storage (see my response in a separate open issue).

[Will Johnson]

@tylin, as the most recent contributor to this repo, can you add this permission?

[Tsung-Yi Lin]

@wpjohnson, I added the permission. Could you give it a try for storage transfer to GCP?

[Will Johnson]

Just ran a transfer successfully using GCSTS, and it works! Thanks!