Fix E306 in roles/kubernetes (#6500)

roles/kubernetes/node/tasks/pre_upgrade.yml

@@ -1,11 +1,14 @@
 ---
-- name: "Pre-upgrade | check if kubelet container exists"  # noqa 306
+- name: "Pre-upgrade | check if kubelet container exists"
   shell: >-
+    set -o pipefail &&
     {% if container_manager in ['crio', 'docker'] %}
     docker ps -af name=kubelet | grep kubelet
     {% elif container_manager == 'containerd' %}
     crictl ps --all --name kubelet | grep kubelet
     {% endif %}
+  args:
+    executable: /bin/bash
   failed_when: false
   changed_when: false
   register: kubelet_container_check