Add metrics-server addon switcher in k8s models

Related story: https://mirantis.jira.com/browse/PROD-24599

Change-Id: I040ba6e5fa7eac552bc9c6fb7f7738440d1fc26c
diff --git a/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml b/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
index 6e95a6e..f667e7f 100644
--- a/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
+++ b/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
@@ -58,6 +58,8 @@
           - ${_param:kubernetes_metallb_addresses_pool}
         ingress-nginx:
           enabled: ${_param:kubernetes_ingressnginx_enabled}
+        metrics-server:
+          enabled: ${_param:kubernetes_metrics_server_enabled}
     master:
       kubelet:
         address: ${_param:single_address}