gitlab_group module fail @ creation if project_creation_level and subgroup_creation_level are not defined

[fzarifian]

Summary

cannot create subgroups if project_creation_level and subgroup_creation_level are not defined

when i affect default values to those variable, it works
please add default value for those variable

Issue Type

Bug Report

Component Name

gitlab_group module

Ansible Version

$ ansible --version

Community.general Version

$ ansible-galaxy collection list community.general

Configuration

$ ansible-config dump --only-changed

OS / Environment

No response

Steps to Reproduce

- name: "Create GitLab SubGroup"
  community.general.gitlab_group:
    api_url: https://gitlab.example.com/
    validate_certs: True
    api_token: xxx
    name: c
    path: c
    state: present
    parent: "a/b"

Expected Results

creating should work according the documentation

Actual Results

The full traceback is:
  File "/var/folders/h3/rbw_915j7tg2h4lp1bp63st80000gn/T/ansible_community.general.gitlab_group_payload_y2u7c11d/ansible_community.general.gitlab_group_payload.zip/ansible_collections/community/general/plugins/modules/source_control/gitlab/gitlab_group.py", line 262, in create_group
  File "/Users/fab1/Library/Python/3.8/lib/python/site-packages/gitlab/exceptions.py", line 313, in wrapped_f
    raise error(e.error_message, e.response_code, e.response_body) from e
fatal: [localhost]: FAILED! => {
    "changed": false,
    "invocation": {
        "module_args": {
            "api_job_token": null,
            "api_oauth_token": null,
            "api_password": null,
            "api_token": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
            "api_url": "XXX",
            "api_username": null,
            "auto_devops_enabled": null,
            "avatar_path": null,
            "description": null,
            "name": "c",
            "parent": "a/b",
            "path": "c",
            "project_creation_level": null,
            "require_two_factor_authentication": null,
            "state": "present",
            "subgroup_creation_level": null,
            "validate_certs": true,
            "visibility": "private"
        }
    },
    "msg": "Failed to create group: 500: 500 Internal Server Error "

Code of Conduct

• I agree to follow the Ansible Code of Conduct

[ansibullbot]

Files identified in the description:

• plugins/modules/source_control/gitlab/gitlab_group.py

If these files are incorrect, please update the component name section of the description or use the !component bot command.

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[ansibullbot]

cc @Lunik @Shaps @dj-wasabi @lgatellier @marwatk @metanovii @nejch @scodeman @sh0shin @suukit @waheedi @zanssa
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[Lunik]

Duplicate of #4577

[felixfontein]

Thanks for spotting that @Lunik.