[CentOS-mirror] Update SJTU CentOS Mirror

Hi,

Please update our mirror IP address, information has been listed below.

HTTP: http://ftp.sjtu.edu.cn/centos/
HTTPS: https://ftp.sjtu.edu.cn/centos/
RSYNC: rsync://ftp.sjtu.edu.cn/centos/

Sync schedule: Once every 4 hours
Bandwidth: 1 Gbps
Location: Shanghai, China
Sponsor: SJTU
Sponsor URL: https://www.sjtu.edu.cn/
IPv4 address to authorize: 202.38.97.230, 202.120.58.157
IPv6 address to authorize: 2001:da8:8000:6023::230
Email contact: colins [at] sjtu.edu.cn
Mirroring AltArch: No

Thanks,
Colins