Prepare 5.0.0 (#1123)

* Bump version to 5.0.0-a1.

* Drop support for ansible-core 2.15 and 2.16.

* Remove Python 2 and early Python 3 compatibility.

plugins/module_utils/_scramble.py

@@ -2,14 +2,12 @@
 # GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
+from __future__ import annotations
 
 import base64
 import random
 
 from ansible.module_utils.common.text.converters import to_bytes, to_native, to_text
-from ansible_collections.community.docker.plugins.module_utils._six import PY2
 
 
 def generate_insecure_key():
@@ -17,10 +15,7 @@ def generate_insecure_key():
     while True:
         # Generate a one-byte key. Right now the functions below do not use more
         # than one byte, so this is sufficient.
-        if PY2:
-            key = chr(random.randint(0, 255))
-        else:
-            key = bytes([random.randint(0, 255)])
+        key = bytes([random.randint(0, 255)])
         # Return anything that is not zero
         if key != b'\x00':
             return key
@@ -31,12 +26,8 @@ def scramble(value, key):
     if len(key) < 1:
         raise ValueError('Key must be at least one byte')
     value = to_bytes(value)
-    if PY2:
-        k = ord(key[0])
-        value = b''.join([chr(k ^ ord(b)) for b in value])
-    else:
-        k = key[0]
-        value = bytes([k ^ b for b in value])
+    k = key[0]
+    value = bytes([k ^ b for b in value])
     return '=S=' + to_native(base64.b64encode(value))
 
 
@@ -47,10 +38,6 @@ def unscramble(value, key):
     if not value.startswith(u'=S='):
         raise ValueError('Value does not start with indicator')
     value = base64.b64decode(value[3:])
-    if PY2:
-        k = ord(key[0])
-        value = b''.join([chr(k ^ ord(b)) for b in value])
-    else:
-        k = key[0]
-        value = bytes([k ^ b for b in value])
+    k = key[0]
+    value = bytes([k ^ b for b in value])
     return to_text(value)