##### 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 ipv6, we use a weight scale of 0 (all possible ipv6 addresses) to 128 (single ip)
        - for ipv4, we use a weight scale of 0 (all possible ipv4 addresses) to 128 (single ip)
        Therefore for ipv4, we use prefixlen (0-32) * 4 for weight,
        which corresponds to ipv6 (0-128).
        """
        myweight = self.source_weight()
        hisweight = other.source_weight()
        if myweight != hisweight:
            return myweight > hisweight
        myweight = self.db_weight()
        hisweight = other.db_weight()
        if myweight != hisweight:
            return myweight < hisweight
        myweight = self.user_weight()
        hisweight = other.user_weight()
        if myweight != hisweight:
            return myweight < hisweight
        try:
            return self['src'] < other['src']
        except TypeError:
            return self.source_type_weight() < other.source_type_weight()
        except Exception:
            
            return self.line() < other.line()
    def source_weight(self):
        """Report the weight of this source net.
        Basically this is the netmask, where IPv4 is normalized to IPv6
        (IPv4/32 has the same weight as IPv6/128).
        """
        if self['type'] == 'local':