Anyone having problems with S3 etcd backup in 2.6.6? I get

failed to set s3 server: failed to check s3 bucket:etcd-backup, err:Access Denied

I already tried to change the IAM Policy, I'm trying with

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:*"
      ],
      "Resource": [
        "arn:aws:s3:::*",
        "arn:aws:s3:::*/*"
      ]
    }
  ]
}

And it still fails