rename gnupg public key file
重命名GnuPGP公钥文件名

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
ignore cert file
忽略证书文件

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
add a crt document CA
添加crt格式公钥证书

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>