Use credentials to query region on non-public buckets

[kaovilai]

          TODO: use credentials to query region on non-public buckets

https://docs.aws.amazon.com/AmazonS3/latest/API/API_HeadBucket.html#:~:text=Request%20to%20public%20buckets%20that%20grant%20the%20s3%3AListBucket%20permission%20publicly%20do%20not%20need%20to%20be%20signed.

aws/aws-sdk-go-v2#2716.

Originally posted by @kaovilai in #1470 (comment)

[openshift-bot]

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/lifecycle stale

[kaovilai]

/lifecycle frozen