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##### SUMMARY
<!--- Explain the problem briefly below, add suggestions to wording or structure -->
group module return values are undocumented.
<!--- HINT: Did you know the documentation has an "Edit on GitHub" link on every page ? -->

##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
<!--- Write the short name of the rst file, module, plugin, task or feature below, use your best guess if unsure -->
group
##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.9.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/aschultz/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.7.3 (default, Apr 09 2019, 05:18:21) [GCC]
```
- groupadd
- groupdel
- groupmod
description:
    - Manage presence of groups on a host.
    - For Windows targets, use the M(win_group) module instead.
options:
    name:
        description:
            - Name of the group to manage.
        type: str
        required: true
    gid:
        description:
            - Optional I(GID) to set for the group.
        type: int
    state:
        description:
            - Whether the group should be present or not on the remote host.
        type: str
        choices: [ absent, present ]
        default: present
    system:
        description:
            - If I(yes), indicates that the group created is a system group.
        type: bool
        default: no
    local:
        description:
            - Forces the use of "local" command alternatives on platforms that implement it.