生成证书链
用脚本生成一个根证书, 一个中间证书(intermediate), 三个客户端证书.
脚本来源于(有修改)
https://stackoverflow.com/questions/26759550/how-to-create-own-self-signed-root-certificate-and-intermediate-ca-to-be-importe
中间证书的域名为 localhost.
#!/bin/bash -x
set -e
for C in `echo root-ca intermediate`; do
mkdir $C
cd $C
mkdir certs