fix(samba-remove-user.yml): enhance command structure and error handling for samba user removal tasks

roles/common/tasks/samba-remove-user.yml

@@ -3,10 +3,14 @@
 # - Remove unwanted users
 # ---
 - name: "(samba-remove-user.yml) Check if samba user exists for removable system user"
-  ansible.builtin.shell: pdbedit -w -L | awk -F":" '{ print $1 }' | grep -q '{{ item.name }}'
-  register: samba_remove_system_users_present
-  changed_when: "samba_remove_system_users_present.rc == 0"
-  failed_when: "samba_remove_system_users_present.rc > 1"
+  ansible.builtin.shell:
+    executable: /bin/bash
+    cmd: |
+      set -o pipefail
+      pdbedit -w -L | awk -F":" '{ print $1 }' | grep -q '{{ item.name }}'
+  register: common_samba_remove_system_users_present
+  changed_when: "common_samba_remove_system_users_present.rc == 0"
+  failed_when: "common_samba_remove_system_users_present.rc > 1"
   with_items:
     - "{{ remove_samba_users }}"
   loop_control:
@@ -15,15 +19,19 @@
     - system-user
     - samba-user
 
-- name: (samba-remove-user.yml) Remove (old) system users from samba
-  ansible.builtin.shell: >
-    smbpasswd -s -x {{ item.item.name }}
+- name: (samba-remove-user.yml) Remove (old) system users from samba  # noqa no-handler
+  ansible.builtin.shell:
+    executable: /bin/bash
+    cmd: |
+      set -o pipefail
+      smbpasswd -s -x {{ item.item.name }}
   with_items:
-    - "{{ samba_remove_system_users_present.results }}"
+    - "{{ common_samba_remove_system_users_present.results }}"
   loop_control:
     label: "{{ item.item.name }}"
   when:
     - item.changed
+  changed_when: true
   tags:
     - system-user
     - samba-user