Preserve existing robert password

tasks/users.yml

@@ -1,3 +1,9 @@
+- name: Check if robert user exists
+  getent:
+    database: passwd
+    key: robert
+  register: robert_user
+
 - name: Create robert user
   user:
     name: robert
@@ -6,6 +12,7 @@
     shell: /bin/bash
     create_home: yes
     password: "{{ robert_password_hash }}"
+  when: robert_user.ansible_facts.getent_passwd.robert is not defined
 
 - name: create ansible user
   user: