cert: add revocation reason back to cert-find output
In commit c718ef058847bb39e78236e8af0ad69ac961bbcf some param values were
accidentally removed from cert-find output.
In commit 22d5f579bbd8bb452cf1bf620294ab6ade6e7c47 `serial_number_hex` and
`revoked` were added back.
Add back `revocation_reason` as well. Also, do not include `revoked` with
--raw, as it's a virtual attribute.
Reviewed-By: Pavel Vomacka <email@example.com>