NewCertManager creates a new certificate manager with empty certificate set.

NewFileCert will construct a new file cert but it will not try to load it.

NewSelfSignedCert will generate a new self-signed cert.

CertManager is a collection of certificates that will be reloaded on SIGHUP signal or explicit Reload call.

FileCert represents a single cert loaded from cert/key file pair.

SelfSignedCert represents a single, self-signed certificate, generated at runtime.

Cert is a generic presentation on managed certificate that can be reloaded.