[test-only] Add basic upload/download test for deployment examples

[ishabaral]

Description

This PR implements basic upload/download tests for the deployment examples.

Related Issue

• Part of: [QA] Testing the deployment examples

Motivation and Context

How Has This Been Tested?

• test environment:
• test case 1: ci : https://github.com/owncloud/ocis/actions/runs/33595932172
• test case 2:
• ...

Screenshots (if appropriate):

Types of changes

• 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 change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[kw-security]

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