fix copy etcdctl retries (kubernetes-sigs#10634)

Signed-off-by: bo.jiang <[email protected]>

roles/etcdctl_etcdutl/tasks/main.yml

@@ -9,7 +9,7 @@
     - etcdutl
   register: etcdxtl_install_result
   until: etcdxtl_install_result.rc == 0
-  retries: "{{ etcd_retries }}"
+  retries: 4
   delay: "{{ retry_stagger | random + 3 }}"
   changed_when: false
   when: container_manager ==  "docker"