add retries for calico/canal etcd commands (#2007)

roles/network_plugin/calico/rr/tasks/main.yml

@@ -54,6 +54,8 @@
        "ip": "{{ rr_ip }}",
        "cluster_id": "{{ cluster_id }}"
      }'
+  retries: 4
+  delay: "{{ retry_stagger | random + 3 }}"
   delegate_to: "{{groups['etcd'][0]}}"
 
 - meta: flush_handlers