Certz should permit delivery of a certificate bundle as a PKCS#7 encoded string.

[morrowc]

Neither delivery as 'certificate' (because that requires items a user of a CA may not have for a CA cert bundle) nor as 'certificateChain' (because the certificates which make up the trust bundle are not chains, nor are they chained to something) are appropriate for some trust-bundle having users.

Permit a new type of message, a string which is a pkcs#7 encoded thing to be delivered to the endpoint.