Bugs/958 messages missing when not connectd

[abelikt]

Proposed changes

See https://github.com/thin-edge/thin-edge.io/issues/958 Make the related test connect during the test run and fix their assertions.

This is a draft until we have decided on how to continue with #958

Types of changes

• [x] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• [ ] Documentation Update (if none of the other choices apply)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

https://github.com/thin-edge/thin-edge.io/issues/958

Checklist

• [x] I have read the CONTRIBUTING doc
• [ ] I have signed the CLA (in all commits with git commit -s)
• [ ] I ran cargo fmt as mentioned in CODING_GUIDELINES
• [ ] I used cargo clippy as mentioned in CODING_GUIDELINES
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

[abelikt]

This PR is open as we haven't decided on how to continue with https://github.com/thin-edge/thin-edge.io/issues/958

[abelikt]

This PR is open as we haven't decided on how to continue with https://github.com/thin-edge/thin-edge.io/issues/958

[didier-wenzek]

Closing: too outdated