Enable system.defaults on all root-init

Change-Id: If093d365a9f3942bea9cc2777f90d25753bb805f
diff --git a/classes/cluster/k8s-ha-calico/init.yml b/classes/cluster/k8s-ha-calico/init.yml
index f98b325..148f88e 100644
--- a/classes/cluster/k8s-ha-calico/init.yml
+++ b/classes/cluster/k8s-ha-calico/init.yml
@@ -1,4 +1,5 @@
 classes:
+- system.defaults
 - system.linux.network.dynamic_hosts
 - cluster.k8s-ha-calico.kubernetes
 - cluster.k8s-ha-calico.infra