##### 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
```

type_checker, wanted_name = self._get_wanted_type(wanted, param)
        validated_params = []
        for value in values:
            try:
                validated_params.append(type_checker(value))
            except (TypeError, ValueError) as e:
                msg = "Elements value for option %s" % param
                if self._options_context:
                    msg += " found in '%s'" % " -> ".join(self._options_context)
                msg += " is of type %s and we were unable to convert to %s: %s" % (type(value), wanted_name, to_native(e))
                self.fail_json(msg=msg)
        return validated_params
    def _check_argument_types(self, spec=None, param=None):
        ''' ensure all arguments have the requested type '''
        if spec is None:
            spec = self.argument_spec
        if param is None:
            param = self.params
        for (k, v) in spec.items():
            wanted = v.get('type', None)
            if k not in param:
                continue
            value = param[k]
            if value is None:
                continue
            type_checker, wanted_name = self._get_wanted_type(wanted, k)
            try:
                param[k] = type_checker(value)
                wanted_elements = v.get('elements', None)