addX509Cert
Adds a new entry for CAs identified by a X.509 certificate.
The entry will be persisted in the Storage passed at construction time.
The SubjectKeyIdentifier of certificate is used to identify the certificate.
Return
the TrustEntryX509Cert which was added.
Parameters
certificate
the root X509 certificate for the CA, must have SubjectKeyIdentifier set.
metadata
the metadata for the trust point.
Throws
if there already is another trust point with the same SubjectKeyIdentifier.