Fix Go vet errors for master golang

Co-authored-by: Rajalakshmi-Girish <[email protected]>
Co-authored-by: Abhishek Kr Srivastav <[email protected]>

Kubernetes-commit: d58b536147a6acfc6bfc6f66de2fe3af973ee88d

Author: srivastav-abhishek

rest/client_test.go

@@ -299,7 +299,7 @@ func TestHTTPProxy(t *testing.T) {
 	}))
 	defer testProxyServer.Close()
 
-	t.Logf(testProxyServer.URL)
+	t.Log(testProxyServer.URL)
 
 	u, err := url.Parse(testProxyServer.URL)
 	if err != nil {

tools/remotecommand/v4.go

@@ -115,5 +115,5 @@ func (d *errorDecoderV4) decode(message []byte) error {
 		return errors.New("error stream protocol error: unknown error")
 	}
 
-	return fmt.Errorf(status.Message)
+	return errors.New(status.Message)
 }

transport/cache_test.go

@@ -159,7 +159,7 @@ func TestTLSConfigKey(t *testing.T) {
 
 			shouldCacheA := valueA.Proxy == nil
 			if shouldCacheA != canCacheA {
-				t.Errorf("Unexpected canCache=false for " + nameA)
+				t.Error("Unexpected canCache=false for " + nameA)
 			}
 
 			configIsNotEmpty := !reflect.DeepEqual(*valueA, Config{})