Change the release composites to always contain only the latest children

Change-Id: I35921527a13d31bfab53f28ba822b787391dcfb6
diff --git a/promoteUtils/writeComposites.sh b/promoteUtils/writeComposites.sh
index 26cd10e..844cf0b 100755
--- a/promoteUtils/writeComposites.sh
+++ b/promoteUtils/writeComposites.sh
@@ -112,6 +112,8 @@
   else
     numberOfChildren=3
     echo -e "\n[INFO] Checkpoint, ${checkpoint}, was NOT found to be a final release."
+    numberOfChildren=1
+    echo -e "\n[INFO] Number of children will be set to 1 nevertheless."
   fi
 
   # xargs -d works on projects-storage.eclipse.org, but not on default jnlp agent!