fix group renaming

tasks/move.yaml

@@ -1,7 +1,7 @@
 ---
 
 - name: move group
-  command: "groupmod --login {{ item }} {{ users[item].old_name }}"
+  command: "groupmod --new-name {{ item }} {{ users[item].old_name }}"
   loop: "{{ users.keys() | list }}"
   when: users[item].old_name is defined
   failed_when: false