// https://github.com/etcd-io/etcd/tree/main/hack/tls-setup for more details.
//
// ca-config.json:
//
//	expiry was changed from 1 year to 100 years (876000h)
//
// ca-csr.json:
//
//	ca expiry was set to 100 years (876000h) ("ca":{"expiry":"876000h"})
//	key was changed from ecdsa,384 to rsa,2048
//
// req-csr.json:
//
//	key was changed from ecdsa,384 to rsa,2048
//	hosts were changed to "localhost","127.0.0.1"