Support different object storage then S3

[claudino-kognita]

There would be nice to have support for other object storage implementations like:

• Google Cloud Storage
• Azure Object Storage
• IBM cloud object storage
• Minio

It may be split in two pull requests, one for reading and another for writing.

[Zane-Liao]

I am currently considering taking over this project, I don't know if the manager agrees.