[PR #9762/a3fd357d backport][stable-10] Make apache2_mod_proxy work with Python 3, half-way modern Apache 2 versions, and add basic tests (#9771)

Make apache2_mod_proxy work with Python 3, half-way modern Apache 2 versions, and add basic tests (#9762)

* Move Apache 2 installation to setup role.

* Make module work with Python 3.

* Add basic tests.

* Add changelog fragment.

* Simplify change.

* Pass referer.

(cherry picked from commit a3fd357d81)

Co-authored-by: Felix Fontein <felix@fontein.de>

tests/integration/targets/setup_apache2/tasks/main.yml

@@ -0,0 +1,30 @@
+---
+####################################################################
+# WARNING: These are designed specifically for Ansible tests       #
+# and should not be used as examples of how to write Ansible roles #
+####################################################################
+
+# Copyright (c) Ansible Project
+# 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
+
+- name: Install apache via apt
+  apt:
+    name: "{{item}}"
+    state: present
+  when: "ansible_os_family == 'Debian'"
+  with_items:
+    - apache2
+    - libapache2-mod-evasive
+
+- name: Install apache via zypper
+  community.general.zypper:
+    name: apache2
+    state: present
+  when: "ansible_os_family == 'Suse'"
+
+- name: Enable mod_slotmem_shm on SuSE
+  apache2_module:
+    name: slotmem_shm
+    state: present
+  when: "ansible_os_family == 'Suse'"