Syncing with S3 Frankfurt region fails

[mavnn]

Trying to sync with S3 Frankfurt fails with the error message described in this question here: http://stackoverflow.com/questions/26533245/the-authorization-mechanism-you-have-provided-is-not-supported-please-use-aws4

Is it possible to update the use of S3 to be aware of the new authorization mechanism?

[dnbert]

Provided that the s3 library supports this, I don't see it being a problem. May be a few days before I can investigate though