do more precisely naming

[rwaffen]

just renaming of a var. so it is more precise and does not use discriminatory language anymore.

[rwaffen]

so besides the renaming and changing of the module api, the change of the deprecated node-role is also ab breaking fact? I just googled it and found the old name is deprecated. but what problem will people with older clusters face then? can we somehow write a update path?

[rwaffen]

for reference:

• https://github.com/kubernetes/kubeadm/issues/2200
• https://kubernetes.io/docs/reference/labels-annotations-taints/

i tested it on an old cluster, nothing happened, except a redeployment of coredns. but when i check, i dont see that such a taint/label is ever applied to the servers. not from this module.