this PR made it so that nodes labeled with master will no longer be excluded from Cluster scoped LoadBalancers:
kubernetes/kubernetes#97543

to preserve backwards compatibility we way want to add a new label on CP nodes node.kubernetes.io/exclude-from-external-load-balancers that now handles the exclusion.

1.21:

• add the label for init, join, upgrade
  kubeadm: exclude control plane nodes from external LBs kubernetes#98269

1.22:

• the labeling on upgrade can be removed, assuming 1.21 CP nodes already have the label.
  kubeadm:the node.kubernetes.io/exclude-from-external-load-balancers label removed on upgrade kubernetes#100942