Returns the versioning state of a bucket.
To retrieve the versioning state of a bucket, you must be the bucket
owner.
This implementation also returns the MFA Delete status of the versioning
state. If the MFA Delete status is enabled, the bucket owner must use
an authentication device to change the versioning state of the bucket.
The following operations are related to
get_bucket_versioning:
get_object
put_object
delete_object