fix: add Perl MySQL libraries to MariaDB servers

roles/munin_client/tasks/main.yml

@@ -52,9 +52,11 @@
   when: "'loadbalancers' in group_names"
 
 # For MariaDB servers
-- name: Install Cache::Cache
+- name: Install MariaDB servers
   ansible.builtin.package:
-    name: libcache-cache-perl
+    name:
+      - libcache-cache-perl
+      - libdbd-mysql-perl
     state: present
   notify:
     - Restart munin-node