Prepare 10.0.0 release (#8921)

* Bump version to 10.0.0, remove deprecated modules and plugins.

* Remove redhat module utils.

* Drop support for ansible-core 2.13 and ansible-core 2.14.

plugins/module_utils/redhat.py

@@ -1,76 +0,0 @@
-# -*- coding: utf-8 -*-
-# This code is part of Ansible, but is an independent component.
-# This particular file snippet, and this file snippet only, is BSD licensed.
-# Modules you write using this snippet, which is embedded dynamically by Ansible
-# still belong to the author of the module, and may assign their own license
-# to the complete work.
-#
-# Copyright (c), James Laska
-#
-# Simplified BSD License (see LICENSES/BSD-2-Clause.txt or https://opensource.org/licenses/BSD-2-Clause)
-# SPDX-License-Identifier: BSD-2-Clause
-
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
-
-
-import os
-import shutil
-import tempfile
-
-from ansible.module_utils.six.moves import configparser
-
-
-class RegistrationBase(object):
-    """
-    DEPRECATION WARNING
-
-    This class is deprecated and will be removed in community.general 10.0.0.
-    There is no replacement for it; please contact the community.general
-    maintainers in case you are using it.
-    """
-
-    def __init__(self, module, username=None, password=None):
-        self.module = module
-        self.username = username
-        self.password = password
-
-    def configure(self):
-        raise NotImplementedError("Must be implemented by a sub-class")
-
-    def enable(self):
-        # Remove any existing redhat.repo
-        redhat_repo = '/etc/yum.repos.d/redhat.repo'
-        if os.path.isfile(redhat_repo):
-            os.unlink(redhat_repo)
-
-    def register(self):
-        raise NotImplementedError("Must be implemented by a sub-class")
-
-    def unregister(self):
-        raise NotImplementedError("Must be implemented by a sub-class")
-
-    def unsubscribe(self):
-        raise NotImplementedError("Must be implemented by a sub-class")
-
-    def update_plugin_conf(self, plugin, enabled=True):
-        plugin_conf = '/etc/yum/pluginconf.d/%s.conf' % plugin
-
-        if os.path.isfile(plugin_conf):
-            tmpfd, tmpfile = tempfile.mkstemp()
-            shutil.copy2(plugin_conf, tmpfile)
-            cfg = configparser.ConfigParser()
-            cfg.read([tmpfile])
-
-            if enabled:
-                cfg.set('main', 'enabled', 1)
-            else:
-                cfg.set('main', 'enabled', 0)
-
-            fd = open(tmpfile, 'w+')
-            cfg.write(fd)
-            fd.close()
-            self.module.atomic_move(tmpfile, plugin_conf)
-
-    def subscribe(self, **kwargs):
-        raise NotImplementedError("Must be implemented by a sub-class")