More sleep for cluster

roles/mariadb/tasks/main.yml

@@ -70,3 +70,8 @@
 
 - name: start service at boot.
   command: systemctl reenable mysql.service
+
+- name: Give the cluster some time to initialize replication.
+  command: bash -c "sleep 60 && systemctl daemon-reload"
+  when: groups['databases'] | length >= 3
+