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/systemd-services_redhat_based_OS.yml

@@ -1,64 +1,61 @@
 ---
-
 - name: (systemd-services.yml) Check if Service Exists (RedHat based OS)
-  shell: 'systemctl list-unit-files | grep -q -e "^{{ item }}.service";'
+  ansible.builtin.shell: 'systemctl list-unit-files | grep -q -e "^{{ item }}.service";'
   changed_when: "service_exists.rc > 1"
   failed_when: "service_exists.rc > 1"
   register: service_exists
-  with_items: 
+  with_items:
     - "{{ redhat_services_active_and_started }}"
-  when: 
+  when:
     - ansible_facts.os_family == "RedHat"
 
 #- debug: msg="{{ service_exists.results }}"
 
 - name: (systemd-services.yml) Check if Service is disabled (RedHat based OS)
-  shell: 'systemctl list-unit-files | grep -e "^{{ item.item }}.service"  | grep -q "disabled";'
+  ansible.builtin.shell: 'systemctl list-unit-files | grep -e "^{{ item.item }}.service"  | grep -q "disabled";'
   register: service_is_enabled
   changed_when: "service_is_enabled.rc == 0"
   failed_when: "service_is_enabled.rc > 1"
-  with_items: 
+  with_items:
     - "{{ service_exists.results }}"
   loop_control:
-    label: '{{ item.item }}'
-  when: 
-    - item.rc == 0 
+    label: "{{ item.item }}"
+  when:
+    - item.rc == 0
     - ansible_facts.os_family == "RedHat"
 
 #- debug: msg="{{ service_is_enabled.results }}"
 
 - name: (systemd-services.yml) Enable service
-  systemd:
+  ansible.builtin.systemd:
     name: "{{ item.item.item }}.service"
     enabled: true
   with_items:
     - "{{ service_is_enabled.results }}"
   loop_control:
-    label: '{{ item.item.item }}'
+    label: "{{ item.item.item }}"
   when:
     - item.changed
 
 - name: (systemd-services.yml) Check if Service is active
-  shell: 'systemctl is-active {{ item.item }}.service'
+  ansible.builtin.command: "systemctl is-active {{ item.item }}.service"
   register: service_is_active
   changed_when: 'service_is_active.stdout == "inactive"'
-  failed_when: 'service_is_active.rc > 3'
+  failed_when: "service_is_active.rc > 3"
   with_items:
     - "{{ service_exists.results }}"
   loop_control:
-    label: '{{ item.item }}'
+    label: "{{ item.item }}"
   when:
     - item.rc == 0
 
-
-
 - name: (systemd-services.yml) Start service
-  systemd:
+  ansible.builtin.systemd:
     name: "{{ item.item.item }}.service"
     state: started
   with_items:
     - "{{ service_is_active.results }}"
   loop_control:
-    label: '{{ item.item.item }}'
+    label: "{{ item.item.item }}"
   when:
     - item.changed