update..

roles/common/tasks/sudoers-pc.yml

@@ -22,11 +22,17 @@
   tags:
     - sudoers-global-configuration
 
+#- name: (sudoers-pc.yml) Ensure all sudo_users are in sudo group
+#  user:
+#    name: "{{ item }}"
+#    groups: sudo
+#    append: yes
+#  with_items: "{{ sudo_pc_users }}"
+#  tags:
+#    - sudo-users
+
 - name: (sudoers-pc.yml) Ensure all sudo_users are in sudo group
-  user:
-    name: "{{ item }}"
-    groups: sudo
-    append: yes
+  shell: usermod -a -G sudo "{{ item }}"
   with_items: "{{ sudo_pc_users }}"
   tags:
     - sudo-users