chore(test): backoff cleaning up temporary workspace directory

e2e/framework/util.go

@@ -9,6 +9,8 @@ import (
 	"time"
 
 	"github.com/otiai10/copy"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/util/retry"
 )
 
 func GetTimeout() time.Duration {
@@ -93,7 +95,21 @@ func CopyToTempDir(relativePath string) (string, error) {
 }
 
 func CleanupTempDir(initialDir, tempDir string) {
-	err := os.RemoveAll(tempDir)
+	err := retry.OnError(wait.Backoff{
+		Steps:    3,
+		Duration: 500 * time.Millisecond,
+		Factor:   2.0,
+		Jitter:   0,
+	}, func(err error) bool { return true },
+		func() error {
+			err := os.RemoveAll(tempDir)
+			if err != nil {
+				fmt.Println("WARN:", err)
+				return err
+			}
+
+			return nil
+		})
 	if err != nil {
 		fmt.Println("WARN:", err)
 	}