##### 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
```

b_path = os.path.expanduser(os.path.expandvars(b_path))
        if self.check_file_absent_if_check_mode(b_path):
            return True
        orig_uid, orig_gid = self.user_and_group(b_path, expand)
        try:
            gid = int(group)
        except ValueError:
            try:
                gid = grp.getgrnam(group).gr_gid
            except KeyError:
                path = to_text(b_path)
                self.fail_json(path=path, msg='chgrp failed: failed to look up group %s' % group)
        if orig_gid != gid:
            if diff is not None:
                if 'before' not in diff:
                    diff['before'] = {}
                diff['before']['group'] = orig_gid
                if 'after' not in diff:
                    diff['after'] = {}
                diff['after']['group'] = gid
            if self.check_mode:
                return True
            try:
                os.lchown(b_path, -1, gid)
            except OSError:
                path = to_text(b_path)
                self.fail_json(path=path, msg='chgrp failed')
            changed = True
        return changed
    def set_mode_if_different(self, path, mode, changed, diff=None, expand=True):