centos-release-gluster9 provides the YUM repository file for the CentOS Storage
SIG that provide GlusterFS 9.

This package needs to get built against the targets so that the packages land
at the right tag for inclusion in CentOS Extras.

Building the package can be done like this:

    $ cbs build extras9s-extras-common-el9s "git+https://git.centos.org/rpms/centos-release-gluster.git#$(git log -1 --format=format:%H)"