message: Use filesystem from database config
diff: @@ -54,8 +54,7 @@ BoundStatement Binder::BindCopyTo(CopyStatement &stmt) {
  auto copy = make_unique<LogicalCopyToFile>(copy_function->function, move(function_data));
  copy->file_path = stmt.info->file_path;
  copy->use_tmp_file = use_tmp_file;
  - LocalFileSystem fs;
  - copy->is_file_and_exists = fs.FileExists(copy->file_path);
  + copy->is_file_and_exists = config.file_system->FileExists(copy->file_path);
  copy->AddChild(move(select_node.plan));
  