Merge branch 'stream' into 'master'

Build an {8 stream, stream 8} Version

See merge request !2

.gitlab-ci.yml

 ---
 variables:
   KOJI_TAG: 'openafs'
-  BUILD_6: 'False'
-  BUILD_7: 'False'
   BUILD_8: 'True'
+  BUILD_8s: 'True'
   DIST_8: '.el8.cern'
+  DIST_8s: '.el8s.cern'
 
 include: 'https://gitlab.cern.ch/linuxsupport/rpmci/raw/master/rpm-ci.yml'
 
 .test_install:
   before_script:
-    - export _KOJITAG_OS="KOJI_TAG_${_KOJI_OS}"
-    - export _KOJITAG=${!_KOJITAG_OS:-"${KOJI_TAG}${_KOJI_OS}"}
-    - yum-config-manager --add-repo "http://linuxsoft.cern.ch/internal/repos/${_KOJITAG}-stable/\$basearch/os"
-    - sed -i "s/\[.*\]/[${_KOJITAG}]\npriority=1/" /etc/yum.repos.d/linuxsoft.cern.ch*${_KOJITAG}*.repo
-    - yum install -y --nogpgcheck `ls koji/*${DIST}.noarch.rpm koji/*${DIST}.x86_64.rpm`
\ No newline at end of file
+    - rpmci_add_repo_kojitag_stable
+    - rpmci_install_koji_rpms