Fixing voltha-2.5 scale pipeline

Change-Id: I854a09ace0b7bddc13edde173c79be0462334a4f
diff --git a/jjb/pipeline/voltha-scale-test.groovy b/jjb/pipeline/voltha-scale-test.groovy
index d80ca34..46b0074 100644
--- a/jjb/pipeline/voltha-scale-test.groovy
+++ b/jjb/pipeline/voltha-scale-test.groovy
@@ -218,8 +218,8 @@
             echo "Installing with the following extra arguments:"
             echo $EXTRA_HELM_FLAGS
 
-            # if it's master set the correct BBSIM_CFG
-            if [ '${release.trim()}' == 'master' ]; then
+            # if it's newer than voltha-2.4 set the correct BBSIM_CFG
+            if [ '${release.trim()}' != 'voltha-2.4' ]; then
               export BBSIM_CFG="$WORKSPACE/kind-voltha/configs/bbsim-sadis-${workflow}.yaml"
             fi