Fix master node taints in multi node installs (#93)

* Taint master nodes if more than one node

* Kick off fork workflow tests

Co-authored-by: Techno Tim <timothystewart6@gmail.com>

roles/k3s/master/templates/metallb.crds.j2

@@ -1648,6 +1648,8 @@ spec:
       - effect: NoSchedule
         key: node-role.kubernetes.io/control-plane
         operator: Exists
+      - key: CriticalAddonsOnly
+        operator: Exists
 ---
 apiVersion: admissionregistration.k8s.io/v1
 kind: ValidatingWebhookConfiguration