Fix E306 in other roles (#6517)

roles/container-engine/docker/tasks/systemd.yml

@@ -11,9 +11,11 @@
   notify: restart docker
   when: http_proxy is defined or https_proxy is defined
 
-- name: get systemd version  # noqa 306
+- name: get systemd version
   # noqa 303 - systemctl is called intentionally here
-  shell: systemctl --version | head -n 1 | cut -d " " -f 2
+  shell: set -o pipefail && systemctl --version | head -n 1 | cut -d " " -f 2
+  args:
+    executable: /bin/bash
   register: systemd_version
   when: not is_ostree
   changed_when: false