Fix setup_test in plugin/kubernetes (#2460)

PR race condition, fix the test data for the setup.
Signed-off-by: Miek Gieben <miek@miek.nl>

plugin/kubernetes/setup_test.go

@@ -406,7 +406,6 @@ kubernetes cluster.local`,
 			"",
 			podModeDisabled,
 			fall.Zero,
-			nil,
 		},
 	}