##### 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
```

:kw prompt_regex: Regex string (not a compiled regex) which can be
            used to detect prompts in the stdout which would otherwise cause
            the execution to hang (especially if no input data is specified)
        :kw environ_update: dictionary to *update* os.environ with
        :kw umask: Umask to be used when running the command. Default None
        :kw encoding: Since we return native strings, on python3 we need to
            know the encoding to use to transform from bytes to text.  If you
            want to always get bytes back, use encoding=None.  The default is
            "utf-8".  This does not affect transformation of strings given as
            args.
        :kw errors: Since we return native strings, on python3 we need to
            transform stdout and stderr from bytes to text.  If the bytes are
            undecodable in the ``encoding`` specified, then use this error
            handler to deal with them.  The default is ``surrogate_or_strict``
            which means that the bytes will be decoded using the
            surrogateescape error handler if available (available on all
            python3 versions we support) otherwise a UnicodeError traceback
            will be raised.  This does not affect transformations of strings
            given as args.
        :kw expand_user_and_vars: When ``use_unsafe_shell=False`` this argument
            dictates whether ``~`` is expanded in paths and environment variables
            are expanded before running the command. When ``True`` a string such as
            ``$SHELL`` will be expanded regardless of escaping. When ``False`` and
            ``use_unsafe_shell=False`` no path or variable expansion will be done.
        :kw pass_fds: When running on Python 3 this argument
            dictates which file descriptors should be passed
            to an underlying ``Popen`` constructor. On Python 2, this will
            set ``close_fds`` to False.
        :kw before_communicate_callback: This function will be called
            after ``Popen`` object will be created