add until option for etcd backup commands

roles/etcd/handlers/backup.yml

@@ -39,6 +39,8 @@
   environment:
     ETCDCTL_API: 2
   retries: 3
+  register: backup_v2_command
+  until: backup_v2_command.rc == 0
   delay: "{{ retry_stagger | random + 3 }}"
 
 - name: Backup etcd v3 data
@@ -51,4 +53,6 @@
     ETCDCTL_CERT: "{{ etcd_cert_dir }}/admin-{{ inventory_hostname }}.pem"
     ETCDCTL_KEY: "{{ etcd_cert_dir }}/admin-{{ inventory_hostname }}-key.pem"
   retries: 3
+  register: etcd_backup_v3_command
+  until: etcd_backup_v3_command.rc == 0
   delay: "{{ retry_stagger | random + 3 }}"