##### 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
```

'''
        This method can be used to add a rule to the list of rules in this PgHba object
        '''
        key = rule.key()
        try:
            try:
                oldrule = self.rules[key]
            except KeyError:
                raise PgHbaRuleChanged
            ekeys = set(list(oldrule.keys()) + list(rule.keys()))
            ekeys.remove('line')
            for k in ekeys:
                if oldrule[k] != rule[k]:
                    raise PgHbaRuleChanged('{0} changes {1}'.format(rule, oldrule))
        except PgHbaRuleChanged:
            self.rules[key] = rule
            self.diff['after']['pg_hba'].append(rule.line())
            if rule['db'] not in ['all', 'samerole', 'samegroup', 'replication']:
                databases = set(rule['db'].split(','))
                self.databases.update(databases)
            if rule['usr'] != 'all':
                user = rule['usr']
                if user[0] == '+':
                    user = user[1:]
                self.users.add(user)
    def remove_rule(self, rule):