Fix: kubeadm_join: Correct node check for Kubernetes 1.32+

Author: teasonia

manifests/kubeadm_join.pp

@@ -87,6 +87,6 @@
     path        => $path,
     logoutput   => true,
     timeout     => 0,
-    unless      => "kubectl get nodes | grep ${node_name}",
+    unless      => "kubectl get nodes ${node_name}",
   }
 }