Add unit tests for cert->dnsName and cert->CN functions
Add unit tests for cert->dnsName and cert->CN functions

cert-manager/cert-manager,jetstack-experimental/cert-manager,cert-manager/cert-manager,jetstack-experimental/cert-manager,cert-manager/cert-manager,jetstack/cert-manager,jetstack-experimental/cert-manager,jetstack/cert-manager,jetstack/cert-manager