Add retries for copying binaries from containers

Closes issue: https://github.com/kubespray/kargo/issues/479

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

roles/etcd/tasks/install.yml

@@ -17,6 +17,10 @@
            /usr/bin/docker cp etcdctl-binarycopy:{{ etcd_container_bin_dir }}etcdctl {{ bin_dir }}/etcdctl &&
            /usr/bin/docker rm -f etcdctl-binarycopy"
   when: etcd_deployment_type == "docker"
+  register: etcd_task_result
+  until: etcd_task_result.rc == 0
+  retries: 4
+  delay: "{{ 20 | random + 3 }}"
   changed_when: false
 
 #Plan B: looks nicer, but requires docker-py on all hosts: