##### 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
```

opts = {
            'error': False,
            'warn': False,
            'ignore': True
        }
        
        allow_conversion = opts.get(self._string_conversion_action, True)
        try:
            return check_type_str(value, allow_conversion)
        except TypeError:
            common_msg = 'quote the entire value to ensure it does not change.'
            if self._string_conversion_action == 'error':
                msg = common_msg.capitalize()
                raise TypeError(to_native(msg))
            elif self._string_conversion_action == 'warn':
                msg = ('The value {0!r} (type {0.__class__.__name__}) in a string field was converted to {1!r} (type string). '
                       'If this does not look like what you expect, {2}').format(value, to_text(value), common_msg)
                self.warn(to_native(msg))
                return to_native(value, errors='surrogate_or_strict')
    def _check_type_list(self, value):
        return check_type_list(value)
    def _check_type_dict(self, value):
        return check_type_dict(value)
    def _check_type_bool(self, value):
        return check_type_bool(value)
    def _check_type_int(self, value):
        return check_type_int(value)
    def _check_type_float(self, value):
        return check_type_float(value)
    def _check_type_path(self, value):