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/sudoers.yml

@@ -1,6 +1,5 @@
 ---
-
-#- name: (sudoers.yml) include variables
+# - name: (sudoers.yml) include variables
 #  include_vars: "{{ item }}"
 #  with_first_found:
 #    - "sudoers-{{ inventory_hostname }}.yml"
@@ -11,28 +10,28 @@
 #    - sudoers-remove
 #    - sudoers-file-configuration
 #    - sudoers-global-configuration
-    
+
 - name: (sudoers.yml) Remove user entries in file /etc/sudoers
-  lineinfile:
+  ansible.builtin.lineinfile:
     dest: /etc/sudoers
     state: absent
-    regexp: '^{{ item }}'
+    regexp: "^{{ item }}"
     owner: root
     group: root
-    mode: 0440
+    mode: "0440"
     validate: visudo -cf %s
-  with_items: '{{ sudoers_remove_user }}'
+  with_items: "{{ sudoers_remove_user }}"
   tags:
     - sudoers-remove
 
 - name: (sudoers.yml) update specific sudoers configuration files (/etc/sudoers.d/)
-  template:
+  ansible.builtin.template:
     src: etc/sudoers.d/50-user.j2
     dest: /etc/sudoers.d/50-user
     #validate: visudo -cf %s
     owner: root
     group: root
-    mode: 0440
+    mode: "0440"
   tags:
     - sudoers-file-configuration
 
@@ -48,10 +47,10 @@
 #    - sudoers-global-configuration
 
 - name: (sudoers.yml) Ensure all sudo_users are in sudo group
-  user:
+  ansible.builtin.user:
     name: "{{ item }}"
     groups: sudo
-    append: yes
+    append: true
   with_items: "{{ sudo_users }}"
   tags:
     - sudo-users