AMEX Expresspay Tests vEP4.0-2.0

AMEX Global Expresspay EMV Terminal End to End Test plan EP4.0-2.0 added to iso8583.info.

It is extension of Amex Expresspay terminal tests with few new features:
- Tests for Expresspay certified terminals v4.0 and above;
- SCA-PSD2 test cases for Europe. Different conditions for Expresspay terminals v3.1 and v4.0+;

These tests detected and XP cards can be authorised our test hosts simulators. For SCA-PSD2 tests Amex GCAG host reply with corespondent response codes.