##### 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
```

- This flag indicates that filesystem links in the destination, if they exist, should be followed.
    type: bool
    default: no
    version_added: '1.8'
  local_follow:
    description:
    - This flag indicates that filesystem links in the source tree, if they exist, should be followed.
    type: bool
    default: yes
    version_added: '2.4'
  checksum:
    description:
    - SHA1 checksum of the file being transferred.
    - Used to validate that the copy of the file was successful.
    - If this is not provided, ansible will use the local calculated checksum of the src file.
    type: str
    version_added: '2.5'
extends_documentation_fragment:
- decrypt
- files
- validate
notes:
- The M(copy) module recursively copy facility does not scale to lots (>hundreds) of files.
seealso:
- module: assemble
- module: fetch
- module: file
- module: synchronize
- module: template
- module: win_copy