fix: dont replace kubeconfig symlink by a file at cluster creation #1455
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What
This MR adds support for when the kubeconfig file is a symbolic link.
Why
As reported by this issue, the current implementation causes the replacement of the symbolic link by a regular file holding the new/merged config.
Implications
Shouldnt change the behavior of anything, beside fixing the bug.
Tests
git reset --hard && make
is successful/home/pierre/.kube/config -> /home/pierre/syncthing/t480s/config/kubectl
/home/pierre/.kube/config