fix master taint implementation - linting problems (#95)

* add virtual-ip to certificate SAN entries

Adds the kube-vip IP as a Subject Alternative Name in the TLS cert. It is needed otherwise you cannot access the cluster.

* fixes bug with master taints (#1)

- improves taint logic

* fixes typo

* fixes formatting

* fixes undefined group['node'] if missing from hosts.ini (#2)

* fixes undefined group['node'] if missing from hosts.ini

- improves application of master taint by centralizing code

* improves molecule testing, fixes linting

* hacking at linter problems, small tweaks

- increases the metallb timeout error due to intermittent testing errors in GitHub actions

* improves context by renaming taint variable

- makes variable boolean

* fix bug

* removes linting hacks

Co-authored-by: Ioannis Angelakopoulos <ioangel@gmail.com>

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

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