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/_api/context/api.py

@@ -7,14 +7,11 @@
 # It is licensed under the Apache 2.0 license (see LICENSES/Apache-2.0.txt in this collection)
 # SPDX-License-Identifier: Apache-2.0
 
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
+from __future__ import annotations
 
 import json
 import os
 
-from ansible_collections.community.docker.plugins.module_utils._six import raise_from
-
 from .. import errors
 
 from .config import (
@@ -148,9 +145,9 @@ class ContextAPI(object):
                             raise ValueError('"default" is a reserved context name')
                         names.append(name)
                     except Exception as e:
-                        raise_from(errors.ContextException(
+                        raise errors.ContextException(
                             "Failed to load metafile {filepath}: {e}".format(filepath=filepath, e=e),
-                        ), e)
+                        ) from e
 
         contexts = [cls.get_default_context()]
         for name in names:

plugins/module_utils/_api/context/config.py

@@ -7,8 +7,7 @@
 # It is licensed under the Apache 2.0 license (see LICENSES/Apache-2.0.txt in this collection)
 # SPDX-License-Identifier: Apache-2.0
 
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
+from __future__ import annotations
 
 import hashlib
 import json

plugins/module_utils/_api/context/context.py

@@ -7,15 +7,12 @@
 # It is licensed under the Apache 2.0 license (see LICENSES/Apache-2.0.txt in this collection)
 # SPDX-License-Identifier: Apache-2.0
 
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
+from __future__ import annotations
 
 import json
 import os
 from shutil import copyfile, rmtree
 
-from ansible_collections.community.docker.plugins.module_utils._six import raise_from
-
 from ..errors import ContextException
 from ..tls import TLSConfig
 
@@ -120,9 +117,9 @@ class Context(object):
                 metadata = json.load(f)
         except (OSError, KeyError, ValueError) as e:
             # unknown format
-            raise_from(Exception(
+            raise Exception(
                 "Detected corrupted meta file for context {name} : {e}".format(name=name, e=e)
-            ), e)
+            ) from e
 
         # for docker endpoints, set defaults for
         # Host and SkipTLSVerify fields