Bump version to 3.0.0-dev0, remove deprecated functionality and implement announced breaking changes (#873)

* Bump verison to 3.0.0-dev0.

* Change check mode behavior for *_pipe modules.

* Remove PyOpenSSL backend.

* Remove PyOpenSSL setup.

* Change default of asn1_base64.

* Remove deprecated common module utils.

* Remove get_default_argspec().

* Mark two methods as abstract.

* Remove ACME v1 support.

* Remove retrieve_acme_v1_certificate().

* Remove deprecated docs fragment.

* Change meaning of mode parameter.

* Mark no longer used option as 'to deprecate'.

plugins/module_utils/crypto/module_backends/common.py

@@ -1,33 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright (c) 2020, Felix Fontein <felix@fontein.de>
-# 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 ansible.module_utils.basic import AnsibleModule
-from ansible_collections.community.crypto.plugins.module_utils.argspec import (
-    ArgumentSpec as _ArgumentSpec,
-)
-
-
-class ArgumentSpec(_ArgumentSpec):
-    def create_ansible_module_helper(self, clazz, args, **kwargs):
-        result = super(ArgumentSpec, self).create_ansible_module_helper(
-            clazz, args, **kwargs
-        )
-        result.deprecate(
-            "The crypto.module_backends.common module utils is deprecated and will be removed from community.crypto 3.0.0."
-            " Use the argspec module utils from community.crypto instead.",
-            version="3.0.0",
-            collection_name="community.crypto",
-        )
-        return result
-
-
-__all__ = ("AnsibleModule", "ArgumentSpec")