Build for CS8

.gitlab-ci.yml

 ---
 variables:
-  KOJICI_USER: 'kojici'
   KOJI_TAG: 'cern'
-  BUILD_6: 'False'
-  BUILD_7: 'False'
   BUILD_8: 'True'
+  BUILD_8s: 'True'
   DIST_7: '.el7.cern'
   DIST_8: '.el8.cern'
+  DIST_8s: '.el8s.cern'
 
 # DO NOT MODIFY THIS
 include: 'https://gitlab.cern.ch/linuxsupport/rpmci/raw/master/rpm-ci.yml'