Merge "Recovery test: Fix an parameter issue in string construction"

  std::vector<std::string> serial_numbers;

  // Creates a dummy serial number string.

  for (size_t c = 'a'; c <= 'z'; c++) {

    serial_numbers.emplace_back(c, serialno.size());

  for (char c = 'a'; c <= 'z'; c++) {

    serial_numbers.emplace_back(serialno.size(), c);

  }

  // No matched serialno found.