refactor(users): change system.users from list to dict keyed by username

roles/configuration/tasks/sudo.yml

@@ -15,15 +15,15 @@
     validate: /usr/sbin/visudo --check --file=%s
 
 - name: Deploy per-user sudoers rules
-  when: item.sudo | default(false)
+  when: item.value.sudo | default(false)
   vars:
     configuration_sudoers_rule: >-
-      {{ item.sudo if item.sudo is string else 'ALL=(ALL) NOPASSWD: ALL' }}
+      {{ item.value.sudo if item.value.sudo is string else 'ALL=(ALL) NOPASSWD: ALL' }}
   ansible.builtin.copy:
-    content: "{{ item.name }} {{ configuration_sudoers_rule }}\n"
-    dest: "/mnt/etc/sudoers.d/{{ item.name }}"
+    content: "{{ item.key }} {{ configuration_sudoers_rule }}\n"
+    dest: "/mnt/etc/sudoers.d/{{ item.key }}"
     mode: "0440"
     validate: /usr/sbin/visudo --check --file=%s
-  loop: "{{ system_cfg.users }}"
+  loop: "{{ system_cfg.users | dict2items }}"
   loop_control:
-    label: "{{ item.name }}"
+    label: "{{ item.key }}"