Plugin listed error detection improved

tasks/xpack/elasticsearch-xpack-install.yml

@@ -4,6 +4,7 @@
 - shell: "{{es_home}}/bin/plugin list | sed -n '1!p' | grep {{item}}"
   register: feature_installed
   changed_when: False
+  failed_when: "'ERROR' in feature_installed.stdout"
   ignore_errors: yes
   environment:
     CONF_DIR: "{{ conf_dir }}"