[CI] BDD Tests that are not implemented: should the build fail or warn?

We noticed that there are a few BDD files under https://github.com/elastic/apm-agent-python/tree/master/tests/bdd/features
- api_key
- azure_app_service_metadata
- outcome

But only the API Key ones are implemented.

>[2021-08-02T10:01:23.365Z] tests/bdd/__init__.py 0 0 0 0 100%
[2021-08-02T10:01:23.365Z] tests/bdd/api_key_tests.py 31 15 0 0 52%
[2021-08-02T10:01:23.365Z] tests/client/__init__.py 0 0 0 0 100%

You can check that they do not appear under the test list for that package: https://apm-ci.elastic.co/job/apm-agent-python/job/apm-agent-python-mbp/job/master/500/testReport/tests.bdd/

I'd like to ask about your expectations on it: should the build fail because they are not implemented, or show them as skipped?