fix: Disable in percona name resolution (#642)

Fixes #545
diff --git a/roles/percona_xtradb_cluster/vars/main.yml b/roles/percona_xtradb_cluster/vars/main.yml
index 5721e0f..fe7aff7 100644
--- a/roles/percona_xtradb_cluster/vars/main.yml
+++ b/roles/percona_xtradb_cluster/vars/main.yml
@@ -10,6 +10,8 @@
       max_connections=8192
       innodb_buffer_pool_size=4096M
       max_allowed_packet=16M
+      # Skip reverse DNS lookup of clients
+      skip-name-resolve
     sidecars:
       - name: exporter
         image: "{{ atmosphere_images['prometheus_mysqld_exporter'] | vexxhost.kubernetes.docker_image('ref') }}"