Mark Meijerman 82de005fdf
Resolve ansible deprecation warnings
Ansible version 2.8.0 yields these type of deprecation warnings:
```
TASK [HanXHX.mysql : APT_KEY | Install Percona key] ****************************
[DEPRECATION WARNING]: evaluating mariadb_use_percona_apt as a bare variable,
this behaviour will go away and you might need to add |bool to the expression
in the future. Also see CONDITIONAL_BARE_VARS configuration toggle.. This
feature will be removed in version 2.12. Deprecation warnings can be disabled
by setting deprecation_warnings=False in ansible.cfg.
```
2019-06-11 08:08:37 +02:00
..
2019-06-11 08:08:37 +02:00