Re #8590 - Modified tests due to fields of subject implemented
Re #8577 - Minor refactoring (crl -> crl_ocsp).
Re #8576 - Added crl endpoint integration tests, fix of serial number
Re #8576 - Fixed generating index file for generating empty CRL
Re #8576 - cryptography.py implemented generate_crl()
Re #8575 - Serial number item in the index file is now always uppercase
Re #8575 - Added a file that defines methods used for generating CA index file lines
Added unit tests verifying the validity of added methods