Merge pull request #20513 from nikhiljindal/apiserverExampleTest

Adding test for apiserver example

pkg/master/master_test.go

@@ -89,7 +89,11 @@ func newMaster(t *testing.T) (*Master, *etcdtesting.EtcdTestServer, Config, *ass
 	config.ProxyDialer = func(network, addr string) (net.Conn, error) { return nil, nil }
 	config.ProxyTLSClientConfig = &tls.Config{}
 
-	master := New(&config)
+	master, err := New(&config)
+	if err != nil {
+		t.Fatalf("Error in bringing up the master: %v", err)
+	}
+
 	return master, etcdserver, config, assert
 }