Revert "Use the OpenSSL certificate parser in cert-find"
    
    This reverts commit 191880bc9f77c3e8a3cecc82e6eea33ab5ad03e4.
    
    The problem isn't with python-cryptography, it is with the
    IPACertificate class which does way more work on a certificate
    than is necessary in cert-find.
    
    Related: https://pagure.io/freeipa/issue/9331
    Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>