* Return the proper serial number in OCSP verification errors
- We returned the issuer's certificate number instead of the serial
number of the actual certificate we validated from an OCSP request.
- The problematic serial number within the error are never shown
currently in Vault. The only user of this library is cert-auth
which swallows errors around revoked certificates and returns
a boolean false instead of the actual error message.
* Add cl
* Use previously formatted serial in error msg