Accept and apply `workdir-root` in `testcloud`

[skycastlelily]

Pull Request Checklist

• [x] implement the feature
• [ ] write the documentation
• [ ] extend the test coverage
• [ ] update the specification
• [ ] adjust plugin docstring
• [ ] modify the json schema
• [ ] mention the version
• [ ] include a release note

[happz]

/packit build

[skycastlelily]

Added one small commit replacing os.mkdirs with Path.mkdir.

Hi Martin,opps,thanks for your review and commit:) , I forgot to fetch your commit before I roll back, would you please update this with your commit,please? :sweat_smile . My latest commit actually doesn't work well, so I roll back to previous solution:)

[martinhoyer]

Added one small commit replacing os.mkdirs with Path.mkdir.

Hi Martin,opps,thanks for your review and commit:) , I forgot to fetch your commit before I roll back, would you please update this with your commit,please? :sweat_smile . My latest commit actually doesn't work well, so I roll back to previous solution:)

no worries :) added again.

[happz]

Unrelated failure, merging.