CBS -> repositories synchronization

This git repo used to be the repository controlling how packages built through https://cbs.centos.org were pushed to :

• https://buildlogs.centos.org (for 'testing' packages)
• http://mirror.centos.org (and CDN, through external mirrors, for 'release' packages)

As there is now a new process in place that will automatically push to correct location, based on cbs koji tag structure, this git repository isn't used anymore.

See Dedicated Wiki page for SIGs for how to build+push pkgs