Updating user module for new get_one

awx_collection/tests/integration/targets/tower_user/tasks/main.yml

@@ -15,9 +15,9 @@
     that:
       - "result is changed"
 
-- name: Change a User
+- name: Change a User by ID
   tower_user:
-    username: "{{ username }}"
+    username: "{{ result.id }}"
     last_name: User
     email: joe@example.org
     state: present