Merge pull request #40 from deefour/patch/fix-bare-variable-deprecation

use bool filter on bare variable to address Ansible 2.8 deprecation warning

Author: rndmh3ro

tasks/main.yml

@@ -10,12 +10,12 @@
   tags: always
 
 - include: configure.yml
-  when: mysql_hardening_enabled
+  when: mysql_hardening_enabled | bool
   tags:
     - mysql_hardening
 
 - include: mysql_secure_installation.yml
-  when: mysql_hardening_enabled
+  when: mysql_hardening_enabled | bool
   tags:
     - mysql_hardening
     - mysql_secure_installation