##### SUMMARY
If a module sets `add_file_common_args=True` when calling `AnsibleModule`, all elements from [FILE_COMMON_ARGUMENTS](https://github.com/ansible/ansible/blob/e9d29b1fe4285d90d7a4506b80260a9e24c3bcea/lib/ansible/module_utils/basic.py#L229-L257) are included in the argument spec. The [files document fragment](https://github.com/ansible/ansible/blob/e9d29b1fe4285d90d7a4506b80260a9e24c3bcea/lib/ansible/plugins/doc_fragments/files.py#L15-L80) only documents a subset of them, though. Missing are:
 - src
 - follow
 - force
 - content
 - backup
 - remote_src
 - regexp
 - delimiter
 - directory_mode

Most module authors using `add_file_common_args=True` are probably not aware that their modules have these options as well.

I don't think these extra options should be added by default if `add_file_common_args=True` is specified.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
lib/ansible/module_utils/basic.py

##### ANSIBLE VERSION
```
devel
```

argument_spec=argument_spec,
        add_file_common_args=True,
        supports_check_mode=True
    )
    if IPADDRESS_IMP_ERR is not None:
        module.fail_json(msg=missing_required_lib('ipaddress'), exception=IPADDRESS_IMP_ERR)
    contype = module.params["contype"]
    create = bool(module.params["create"] or module.check_mode)
    if module.check_mode:
        backup = False
    else:
        backup = module.params['backup']
        backup_file = module.params['backup_file']
    databases = module.params["databases"]
    dest = module.params["dest"]
    method = module.params["method"]
    netmask = module.params["netmask"]
    options = module.params["options"]
    order = module.params["order"]
    source = module.params["address"]
    state = module.params["state"]
    users = module.params["users"]
    ret = {'msgs': []}
    try:
        pg_hba = PgHba(dest, order, backup=backup, create=create)
    except PgHbaError as error:
        module.fail_json(msg='Error reading file:\n{0}'.format(error))
    if contype:
        try:
            for database in databases.split(','):