add robustness after testing site.yml

roles/mariadb/tasks/main.yml

@@ -10,9 +10,12 @@
 
 - name: make mariadb settings volume
   file:
-    path: /srv/mariadb/etc/mysql
+    path: "{{ item }}"
     state: directory
     mode: 0777
+  with_items:
+      - /srv/mariadb/lib/mysql
+      - /srv/mariadb/etc/mysql
 
 - name: place settings file
   copy: