##### 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
```

body = form_urlencoded(body)
            except ValueError as e:
                module.fail_json(msg='failed to parse body as form_urlencoded: %s' % to_native(e), elapsed=0)
        if 'content-type' not in [header.lower() for header in dict_headers]:
            dict_headers['Content-Type'] = 'application/x-www-form-urlencoded'
    if creates is not None:
        
        
        
        if os.path.exists(creates):
            module.exit_json(stdout="skipped, since '%s' exists" % creates, changed=False)
    if removes is not None:
        
        
        
        if not os.path.exists(removes):
            module.exit_json(stdout="skipped, since '%s' does not exist" % removes, changed=False)
    
    start = datetime.datetime.utcnow()
    resp, content, dest = uri(module, url, dest, body, body_format, method,
                              dict_headers, socket_timeout)
    resp['elapsed'] = (datetime.datetime.utcnow() - start).seconds
    resp['status'] = int(resp['status'])
    resp['changed'] = False
    
    if dest is not None:
        if resp['status'] in status_code and resp['status'] != 304:
            write_file(module, url, dest, content, resp)
            
            resp['changed'] = True