Fix koji version on el7 (add back trailing .cern)

pkg.sh

@@ -303,7 +303,11 @@ function update_and_commit_md()
   fi
   # Update the current koji buildID (RedHat only)
   if [ "${_brn#ubuntu}" == ${_brn} ]; then
-    local _bid="buildID=$(koji buildinfo ${_nam}-${_tag} | grep ^BUILD | sed 's/\[//' | sed 's/\]//' | cut -d' ' -f3)"
+    if [ "${brn}" == "el7" ]; then
+      local _bid="buildID=$(koji buildinfo ${_nam}-${_tag}.cern | grep ^BUILD | sed 's/\[//' | sed 's/\]//' | cut -d' ' -f3)"
+    else
+      local _bid="buildID=$(koji buildinfo ${_nam}-${_tag} | grep ^BUILD | sed 's/\[//' | sed 's/\]//' | cut -d' ' -f3)"
+    fi
     local _old=$(cat ${_mdf} | egrep "<\!-- KOJIBUILDID = " | cut -d ' ' -f4)
     if [ "${_old}" == "" ]; then
       echo "ERROR! No '<"\!"-- KOJIBUILDID = ' in ${_mdf}?"