cert: add missing param values to cert-find output
Add back `serial_number_hex` and `revoked` param values to cert-find output
accidentally removed in commit c718ef058847bb39e78236e8af0ad69ac961bbcf.
https://fedorahosted.org/freeipa/ticket/6269
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>