CertGenCommand constructor
CertGenCommand()
Creates the cert-gen command.
Implementation
CertGenCommand() {
argParser
..addOption('out', defaultsTo: 'certs', help: 'Output directory.')
..addMultiOption('host', help: 'Extra SAN DNS host (repeatable).')
..addFlag('force', negatable: false, help: 'Overwrite existing certs.');
}