fix-missing-control-plane-taint (#9592)

roles/kubernetes/control-plane/templates/kubeadm-config.v1beta3.yaml.j2

@@ -20,6 +20,8 @@ nodeRegistration:
   taints:
   - effect: NoSchedule
     key: node-role.kubernetes.io/master
+  - effect: NoSchedule
+    key: node-role.kubernetes.io/control-plane
 {% else %}
   taints: []
 {% endif %}

roles/kubernetes/control-plane/templates/kubeadm-controlplane.v1beta3.yaml.j2

@@ -23,6 +23,8 @@ nodeRegistration:
   taints:
   - effect: NoSchedule
     key: node-role.kubernetes.io/master
+  - effect: NoSchedule
+    key: node-role.kubernetes.io/control-plane
 {% else %}
   taints: []
 {% endif %}