message: Make tests pass after 2020
  also test that 64 bit integers are properly handled
  Github-Pull:
  Rebased-From:
diff: @@ -256,14 +256,14 @@ BOOST_AUTO_TEST_CASE(rpc_ban)
  ar = r.get_array();
  BOOST_CHECK_EQUAL(ar.size(), 0);
  - BOOST_CHECK_NO_THROW(r = CallRPC(std::string("setban 127.0.0.0/24 add 1607731200 true")));
  + BOOST_CHECK_NO_THROW(r = CallRPC(std::string("setban 127.0.0.0/24 add 9907731200 true")));
  BOOST_CHECK_NO_THROW(r = CallRPC(std::string("listbanned")));
  ar = r.get_array();
  o1 = ar[0].get_obj();
  adr = find_value(o1, "address");
  UniValue banned_until = find_value(o1, "banned_until");
  BOOST_CHECK_EQUAL(adr.get_str(), "127.0.0.0/24");
  - BOOST_CHECK_EQUAL(banned_until.get_int64(), 1607731200); // absolute time check
  + BOOST_CHECK_EQUAL(banned_until.get_int64(), 9907731200); // absolute time check
  BOOST_CHECK_NO_THROW(CallRPC(std::string("clearbanned")));
  