SF image: use sf-project.io as clone source for repoxplorer
SF image: use sf-project.io as clone source for repoxplorer

Cloning from github make a lot of noises on the stat page
of the Github project. So I prefer we clone from SF.

Change-Id: I29a740303d261b45fbee4b59ebe8c664de0986f3

enovance/software-factory,enovance/software-factory,enovance/software-factory,enovance/software-factory,enovance/software-factory