Remove dependency on ansible.netcommon collection (#2)

* Get rid of ansible.netcommon requirement by integrating module_utils/compat/ipaddress.py.

* Reorder imports.

* Update ignore.txt for plugins/module_utils/compat/ipaddress.py.

* Linting (flake8 / pep8).

* Remove accidentally commited test for ansible/ansible#66920.

plugins/module_utils/crypto.py

@@ -30,9 +30,22 @@ from __future__ import absolute_import, division, print_function
 __metaclass__ = type
 
 
+import abc
+import base64
+import binascii
+import datetime
+import errno
+import hashlib
+import os
+import re
 import sys
+import tempfile
+
 from distutils.version import LooseVersion
 
+from ansible.module_utils import six
+from ansible.module_utils._text import to_native, to_bytes, to_text
+
 try:
     import OpenSSL
     from OpenSSL import crypto
@@ -120,20 +133,6 @@ except ImportError:
     HAS_CRYPTOGRAPHY = False
 
 
-import abc
-import base64
-import binascii
-import datetime
-import errno
-import hashlib
-import os
-import re
-import tempfile
-
-from ansible.module_utils import six
-from ansible.module_utils._text import to_native, to_bytes, to_text
-
-
 class OpenSSLObjectError(Exception):
     pass