- add unit tests for all handwritten code in messages package
- use uuid.NewString() instead of uuid.NewUUID() to avoid unnecessary error
handling
- sort code in messages.go to put type related code close to each other
- move checkFailed from hsm.Access.Healthy method to messages.CertificateInfoFailed
- add typing for Status field of messages.CertificateInfo
- allow multiple attempts to setup certificates
- use CAB forum BR compliant CRLDistributionPoint for Subordinate CA
certificates by referencing their own CRL instead of their parent CA's CRL
- store certificates in DER encoded form
