UseKopsControllerForNodeBootstrap instead of k8s versoin to determine secure tls

Author: Ole Markus With

upup/models/bindata.go

@@ -90,7 +90,9 @@ spec:
         args:
           - --cert-dir=/tmp
           - --secure-port=4443
+        {{ if not UseKopsControllerForNodeBootstrap }}
           - --kubelet-insecure-tls
+        {{ end }}
         ports:
         - name: main-port
           containerPort: 4443