registry = get_server(url=registry, keyfile=keyfile, certfile=certfile)
cert = Certificate(filename=certfile)
cert_str = cert.save_to_string(save_parents=True)
registry = get_server(url=registry, keyfile=keyfile, certfile=certfile)
cert = Certificate(filename=certfile)
cert_str = cert.save_to_string(save_parents=True)