generate_systemd: implement --wants, --after and --requires (GH-431)

[d-513]

This adds --after, --wants and --requires support to generate_systemd modules.

Closes #431

Signed-off-by: dada513 [email protected]

[sshnaidm]

Great, thanks! Would you like to add it to test here as well? https://github.com/containers/ansible-podman-collections/blob/master/tests/integration/targets/podman_container/tasks/main.yml#L546-L576

[sshnaidm]

Please fix a couple of pep8 issues:

ERROR: Found 2 pep8 issue(s) which need to be resolved:
ERROR: plugins/modules/podman_container.py:366:134: W291: trailing whitespace
ERROR: plugins/modules/podman_pod.py:171:134: W291: trailing whitespace

[d-513]

Sure, I'll try to get those sorted asap. Also I will add it to the tests

[sshnaidm]

check-github

[sshnaidm]

check-github

[sshnaidm]

check-github