Set pipefail in case tar fails (#5506)

roles/etcd/tasks/gen_certs_script.yml

@@ -127,7 +127,7 @@
     - "{{ my_etcd_node_certs }}"
 
 - name: Gen_certs | Gather node certs
-  shell: "tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_etcd_node_certs|join(' ') }} | base64 --wrap=0"
+  shell: "set -o pipefail && tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_etcd_node_certs|join(' ') }} | base64 --wrap=0"
   args:
     executable: /bin/bash
     warn: false