Evaluate adding gokv.Store implementation for AWS S3

[philippgille]

AWS S3 is made to store files and it might not support strong consistency (every read after a write contains the written data), but we marshal to []byte anyway and it might be one of the cheapest cloud storage solutions.

Also, S3 is not only for AWS. Many other cloud providers and also self-hosted open source products support the S3 protocol.

• Example cloud provider: https://www.scaleway.com/object-storage/
• Example open source products:
  • https://github.com/minio/minio
  • https://github.com/ceph/ceph (see http://docs.ceph.com/docs/master/radosgw/s3/)

[philippgille]

Some links:

• https://godoc.org/github.com/aws/aws-sdk-go/service/s3#example-S3-PutObject-Shared00
• https://docs.aws.amazon.com/AmazonS3/latest/dev/Welcome.html
• https://docs.minio.io/
• https://docs.minio.io/docs/golang-client-quickstart-guide
• https://docs.minio.io/docs/golang-client-api-reference#FPutObject