Merge pull request #84656 from davidz627/fix/syncReal

Make writing file via container in tests sync for real this time by enclosing multiple commands in quotes

test/e2e/framework/framework.go

@@ -478,7 +478,7 @@ func (f *Framework) WriteFileViaContainer(podName, containerName string, path st
 			return fmt.Errorf("Unsupported character in string to write: %v", c)
 		}
 	}
-	command := fmt.Sprintf("echo '%s' > '%s'; sync", contents, path)
+	command := fmt.Sprintf("\"echo '%s' > '%s'; sync\"", contents, path)
 	stdout, stderr, err := kubectlExecWithRetry(f.Namespace.Name, podName, containerName, "--", "/bin/sh", "-c", command)
 	if err != nil {
 		Logf("error running kubectl exec to write file: %v\nstdout=%v\nstderr=%v)", err, string(stdout), string(stderr))