Fix filter/test: |failed -> is failed

ed371d45 · Robin Sonnabend · 5e8f9877 · ed371d45
Verified Commit ed371d45 authored Feb 22, 2020 by Robin Sonnabend
--- a/mysql/tasks/main.yml
+++ b/mysql/tasks/main.yml
@@ -52,7 +52,7 @@
    name: root
    password: "{{ mysql_root_password }}"
  no_log: true
-  when: mysql_root_creation_result|failed
+  when: mysql_root_creation_result is failed
  tags:
    - mysql
    - config