Merge pull request kubernetes#128420 from tallclair/e2e-cleanup

Reuse cached client config for exec requests in e2e

Author: k8s-ci-robot

test/e2e/framework/pod/exec_util.go

@@ -58,8 +58,6 @@ func ExecWithOptionsContext(ctx context.Context, f *framework.Framework, options
 	if !options.Quiet {
 		framework.Logf("ExecWithOptions %+v", options)
 	}
-	config, err := framework.LoadConfig()
-	framework.ExpectNoError(err, "failed to load restclient config")
 
 	const tty = false
 
@@ -80,7 +78,7 @@ func ExecWithOptionsContext(ctx context.Context, f *framework.Framework, options
 
 	var stdout, stderr bytes.Buffer
 	framework.Logf("ExecWithOptions: execute(POST %s)", req.URL())
-	err = execute(ctx, "POST", req.URL(), config, options.Stdin, &stdout, &stderr, tty)
+	err := execute(ctx, "POST", req.URL(), f.ClientConfig(), options.Stdin, &stdout, &stderr, tty)
 
 	if options.PreserveWhitespace {
 		return stdout.String(), stderr.String(), err