unify the suffix

Co-authored-by: sivchari <[email protected]>

Author: daimaxiaxie

internal/controllers/machine/machine_controller_test.go

@@ -2857,10 +2857,10 @@ func TestIsDeleteNodeAllowed(t *testing.T) {
 
 	testNodeA := &corev1.Node{
 		ObjectMeta: metav1.ObjectMeta{
-			Name: "node-a",
+			Name: "node-1",
 		},
 		Spec: corev1.NodeSpec{
-			ProviderID: "test-node-a",
+			ProviderID: "test-node-1",
 		},
 	}