Fixes #398: exclude deps on up if --no-deps

[bailsman]

Fixes #398 by excluding dependent services if --no-deps is given on the command line.

[p12tic]

Thanks for the PR. It looks good.

Please a release note to the newsfragments directory (you can look here for inspiration on how release note looks like).

Also the PR needs an integration test. In this particular case I think tests/integration/test_podman_compose_deps.py is most relevant for enhancement. Note that it uses compose files from tests/integration/deps.

[bailsman]

Thanks for the hints! The integration test exposed that it is a bit more involved than I thought initially (my local setup didn't trigger these).

• Run (through container_to_args) adds --requires parameters to the podman run command line, which does not work if the dependency is not created/started. Worked around this by adding extra boolean parameter to container_to_args, as is already done for detach.
• Up tries to check if dependencies have successfully started, worked around this by passing in an empty deps set if no-deps is given.

[p12tic]

Add

def deps_from_container(args, cnt):
    if args.no_deps:
        return set()
    return cnt['deps']

and call it here and in the call site below.

[p12tic]

The integration test exposed that it is a bit more involved than I thought initially

Great to see tests had good impact :)

The PR looks good overall, I had one nit comment.

Another nit comment, could you move Fixes #issue number from commit title to commit description? This is the style used throughout recent history.

Thanks a lot!