feat: RKE2 etcd object storage configuration

[hwo-wd]

Description

Building upon prior work¹, this adds the configuration options for persisting snapshots to object storage as per the docs.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Small minor change not affecting the Ansible Role code (GitHub Actions Workflow, Documentation etc.)

How Has This Been Tested?

Manual execution and cross-checking the object store.

Footnotes

1. up to now, "only" restoring from etcd snapshot@S3 was possible. ↩

[hwo-wd]

@MonolithProjects thanks for looking into this PR; as far as I can tell, the error stem from previous issues already residing in main:

• the pre-commit has whitespace issues which I can easily fix, just let me know if you want an extra branch for this
• the molecule tests look a bit different though: they are breaking in main with the same error message

[MonolithProjects]

Thanks @hwo-wd for your PR. I will check it bit later. The failed tests does not seem to be related to your change, so you non't need to bother with them 🙂

[MonolithProjects]

LGTM. Thanks