s3

These are all functions/structs for configuring the same thing:

https://github.com/thanos-io/thanos/blob/5bda2d48b9ef0bf138af6132641eb20102223edb/pkg/objstore/azure/helpers.go#L121
https://github.com/thanos-io/thanos/blob/46ac4d590e783368fc4ec7676f29ff97cd0bd630/pkg/objstore/cos/cos.go#L95
https://github.com/thanos-io/thanos/blob/bf963237e0b95402aeea4093dce465abde055675/pkg/objstore/s3/s3.go#

What went wrong?

I'm getting deprecation warnings with openSSL encryption.

[2019/09/05 08:38:52][info] Using Encryptor::OpenSSL to encrypt the archive.
[2019/09/05 08:40:22][warn] Pipeline STDERR Messages:
[2019/09/05 08:40:22][warn] (Note: may be interleaved if multiple commands returned error messages)
[2019/09/05 08:40:22][warn]
[2019/09/05 08:40:22][warn] *** WARNING : depre

Problem description

Be able to read public GCS files without providing credentials.

Steps/code to reproduce the problem

path = "gs://tensorflow-nightly/prod/tensorflow/release/ubuntu_16/gpu_py37_full/nightly_release/18/20190813-010608/github/tensorflow/pip_pkg/tf_nightly_gpu-1.15.0.dev20190813-cp37-cp37m-linux_x86_64.whl"

import smart_open
try:
    f = smart_open.s