Update scripts and doc to use the el8 WLCG repo instead of the centos8 WLCG repo
Update scripts and doc to use the el8 WLCG repo instead of the centos8 WLCG repo https://linuxsoft.cern.ch/wlcg/
Update scripts and doc to use the el8 WLCG repo instead of the centos8 WLCG repo https://linuxsoft.cern.ch/wlcg/