Make sure S3FileSystemProvider.readAttributes() sees a newly created file

[NaamaGertel]

fixes issues #118

[carlspring]

Hi,

@NaamaGertel , we would like to thank you for your work on this and are sad to see that it was not accepted and merged in this project.

Would you like to fix and test it in our spin-off (rebranded fork) -- s3fs-nio where we have now also migrated our code to AWS SDK v2 (see carlspring/s3fs-nio#63)? As this upstream is now clearly dead (#135), please feel free to check out our work! We've identified this pull request as one of interest for review in carlspring/s3fs-nio#72.

We would like to rebuild a community around the s3fs-nio and would be thrilled, if you'd like to join us in our efforts to build a stable library that is well-maintained, documented and regularly released.

Kind regards,

Martin Todorov