Refactor Ansible tasks to use fully qualified module names and improve code consistency

- Updated all tasks to use fully qualified module names (e.g., ansible.builtin.shell, ansible.builtin.copy) for clarity and to avoid ambiguity.
- Replaced deprecated 'yum' module with 'dnf' for package management on RedHat-based systems.
- Improved formatting and consistency in task definitions, including the use of double quotes for strings and consistent indentation.
- Removed unnecessary comments and whitespace to enhance readability.
- Ensured that conditions and loops are consistently formatted across all tasks.

roles/common/tasks/config_files_mailsystem_scripts.yml

@@ -1,15 +1,14 @@
 ---
-
 - name: (config_files_mailsystem_scripts.yml) Copy config file templates mailsystem scripts
-  template:
-    src: '{{ item.src_path }}'
-    dest: '{{ item.dest_path }}'
+  ansible.builtin.template:
+    src: "{{ item.src_path }}"
+    dest: "{{ item.dest_path }}"
     owner: root
     group: root
-    mode: '0644'
+    mode: "0644"
   loop: "{{ template_files_mailsystem_script }}"
   loop_control:
-    label: 'dest: {{ item.name }}'
+    label: "dest: {{ item.name }}"
   when:
     - template_files_mailsystem_script is defined
     - template_files_mailsystem_script|length > 0