Add source-url and update vendor names

Add following lines:
Source-Url: https://github.com/liangxia/cart_diy.git
#Source-Url: git://github.com/liangxia/cart_diy.git
#Source-Url: http://github.com/liangxia/cart_diy.git
#Source-Url: https://github.com/liangxia/archive/master.zip

and update Vendor/Cartridge-Vendor from redhat to redhat_test.