ParseBucketSSEConfig - Decodes given XML to a valid default bucket encryption config.

AES256 is used with SSE-S3.

AWSKms is used with SSE-KMS.

ApplyOptions ask for specific features to be enabled, when bucketSSEConfig is empty.

BucketSSEConfig - represents default bucket encryption configuration.

EncryptionAction - for ApplyServerSideEncryptionByDefault XML tag.

Rule - for ServerSideEncryptionConfiguration XML tag.

Algorithm - represents valid SSE algorithms supported; currently only AES256 is supported.