message: Add test for order of transactions in dsproof
  The order of the transations when submitted should make no
  difference to the dsproof hash.
diff: @@ -222,6 +222,12 @@ BOOST_AUTO_TEST_CASE(triggers_correctly)
  BOOST_CHECK_EQUAL(size_t(0), node.GetInventoryToSendSize());
  + // Make sure dsproof is the same regardless of the order of txns
  + const auto dsp_first = DoubleSpendProof::create(iter->GetTx(), spend2b);
  + const auto dsp_second = DoubleSpendProof::create(spend2b, iter->GetTx());
  + BOOST_CHECK_EQUAL(dsp_first.createHash(), dsp_second.createHash());
  +
  +
  // The following tests will check for dsproof exceptions
  // 1) Create a dsproof where one transaction is not a bitcoin cash transaction (no fork id)
  