AC1) Ensure that Build Requires in libssh spec file doesn't include openssl-pkcs11 AC2) torture_auth_pkcs11, torture_pki_rsa_uri and torture_pki_ecdsa_uri upstream tests are passing AC3 Stretch goal) Make sure that https://github.com/latchset/pkcs11-provider/blob/main/tests/integration/libssh.sh test is passing

Description: OpenSSL Engines are deprecated and upstream will also remove it's functionality in the near future. Since the inception of providers in OpenSSL 3.0.0, the usage of engines is not recommended. Therefore openssl-pkcs11 package is dropped from Build Requires section now. Consequence: Instead of using engines, pkcs11-provider has be used as a replacement. This build adds support for pkcs11-provider and the tests pass with it.