Method ListFlights

cpp/src/arrow/flight/flight_test.cc:404–407

class HeaderAuthTestServer : public FlightServerBase {
 public:
  Status ListFlights(const ServerCallContext& context, const Criteria* criteria,
                     std::unique_ptr<FlightListing>* listings) override {
    return Status::OK();
  }
};

class TestAuthHandler : public ::testing::Test {