* move s3account.AccountManager into to iam.S3ApiConfiguration and switch to Interface
https://github.com/seaweedfs/seaweedfs/issues/4519
* fix: test bucket acl default and
adjust the variable names
* fix: s3 api config test
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Co-authored-by: Konstantin Lebedev <9497591+kmlebedev@users.noreply.github.co>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>
