##### 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
```

for user in users.split(','):
                    rule = PgHbaRule(contype, database, user, source, netmask, method, options)
                    if state == "present":
                        ret['msgs'].append('Adding')
                        pg_hba.add_rule(rule)
                    else:
                        ret['msgs'].append('Removing')
                        pg_hba.remove_rule(rule)
        except PgHbaError as error:
            module.fail_json(msg='Error modifying rules:\n{0}'.format(error))
        file_args = module.load_file_common_arguments(module.params)
        ret['changed'] = changed = pg_hba.changed()
        if changed:
            ret['msgs'].append('Changed')
            ret['diff'] = pg_hba.diff
            if not module.check_mode:
                ret['msgs'].append('Writing')
                try:
                    if pg_hba.write(backup_file):
                        module.set_fs_attributes_if_different(file_args, True, pg_hba.diff,
                                                              expand=False)
                except PgHbaError as error:
                    module.fail_json(msg='Error writing file:\n{0}'.format(error))
                if pg_hba.last_backup:
                    ret['backup_file'] = pg_hba.last_backup
    ret['pg_hba'] = list(pg_hba.get_rules())
    module.exit_json(**ret)
if __name__ == '__main__':
    main()