Include advanced test suite for verification over PKCS#11
Currently we include a test suite for verification over p11-kit trust module using softhsm as a back-end PKCS#11 module. However, softhsm, doesn't support custom extensions of p11-kit trust module, such as stapled extensions and CKA_X_DISTRUSTED, thus the support for these features is not automatically tested. We should enhance the test suite to include a trust module with the options above, and tests of that functionality.