##### 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
```

import tempfile
import traceback
from ansible.module_utils.ansible_release import __version__ as ansible_version
from re import match
LXML_ETREE_IMP_ERR = None
try:
    from lxml import etree
    HAS_LXML_ETREE = True
except ImportError:
    LXML_ETREE_IMP_ERR = traceback.format_exc()
    HAS_LXML_ETREE = False
BOTO_IMP_ERR = None
try:
    import boto3
    HAS_BOTO = True
except ImportError:
    BOTO_IMP_ERR = traceback.format_exc()
    HAS_BOTO = False
SEMANTIC_VERSION_IMP_ERR = None
try:
    from semantic_version import Version, Spec
    HAS_SEMANTIC_VERSION = True
except ImportError:
    SEMANTIC_VERSION_IMP_ERR = traceback.format_exc()
    HAS_SEMANTIC_VERSION = False
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
from ansible.module_utils.six.moves.urllib.parse import urlparse
from ansible.module_utils.urls import fetch_url
from ansible.module_utils._text import to_bytes, to_native, to_text
def split_pre_existing_dir(dirname):