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>

molecule/ipv6/overrides.yml

@@ -36,6 +36,8 @@
         #    the default has IPv4 ranges only.
         extra_server_args: >-
           {{ extra_args }}
+          --tls-san {{ apiserver_endpoint }}
+          {{ '--node-taint node-role.kubernetes.io/master=true:NoSchedule' if k3s_master_taint else '' }}
           --disable servicelb
           --disable traefik
           --disable-network-policy