[QA] Add CLI test coverage for backup consistency

[Salipa-Gurung]

Description

Add test coverage for bug #9498.

• Upload a file
• Upload the same file again (using "replace" in the webui)
• Upload the same file a third time
• check consistency with ocis backup consistency
  -> There shouldn't be orphaned blob in the blobstore
  -> The file has only version

Note that this doesn't happen if you upload a file with different content but the same name. Versions are created as expected and there is no orphaned blobs.