Move CDDL into separate CDDL files

Move CDDL out of comments and into files, per-method
generateCertificateRequest.cddl
generateCertificateRequestV2.cddl

This makes it easier to read and it means tools can parse it.

Test: Treehugger
Change-Id: I9b71b094d128a5a4566a4d352aaa11d1c9b595ff
3 files changed