Update sources.list.jessie

Change source list from aliyun to ustc.edu.cn

Author: garymengcom

php/php56/sources.list.jessie

@@ -1,5 +1,4 @@
-deb http://mirrors.aliyun.com/debian/ jessie main non-free contrib
-deb http://mirrors.aliyun.com/debian/ jessie-proposed-updates main non-free contrib
-
-deb-src http://mirrors.aliyun.com/debian/ jessie main non-free contrib
-deb-src http://mirrors.aliyun.com/debian/ jessie-proposed-updates main non-free contrib
+deb http://mirrors.ustc.edu.cn/debian stable main contrib non-free
+deb-src http://mirrors.ustc.edu.cn/debian stable main contrib non-free
+deb http://mirrors.ustc.edu.cn/debian stable-proposed-updates main contrib non-free
+deb-src http://mirrors.ustc.edu.cn/debian stable-proposed-updates main contrib non-free