[VOL-4114] Always sourcing the release file before kind-voltha commands

Change-Id: I123957db6e1212583c29a8b0c873cfcde721a390
diff --git a/jjb/pipeline/voltha/voltha-2.7/voltha-nightly-tests-bbsim.groovy b/jjb/pipeline/voltha/voltha-2.7/voltha-nightly-tests-bbsim.groovy
index d86aac9..d26be65 100644
--- a/jjb/pipeline/voltha/voltha-2.7/voltha-nightly-tests-bbsim.groovy
+++ b/jjb/pipeline/voltha/voltha-2.7/voltha-nightly-tests-bbsim.groovy
@@ -64,6 +64,12 @@
     stage('Cleanup') {
       steps {
         sh """
+        if [ "${branch}" != "master" ]; then
+          echo "on branch: ${branch}, sourcing kind-voltha/releases/${branch}"
+          source "$WORKSPACE/kind-voltha/releases/${branch}"
+        else
+          echo "on master, using default settings for kind-voltha"
+        fi
         cd $WORKSPACE/kind-voltha/
         WAIT_ON_DOWN=y DEPLOY_K8S=n ./voltha down || ./voltha down
         """
@@ -242,6 +248,12 @@
          gzip *-combined.log || true
 
          ## shut down voltha but leave kind-voltha cluster
+         if [ "${branch}" != "master" ]; then
+           echo "on branch: ${branch}, sourcing kind-voltha/releases/${branch}"
+           source "$WORKSPACE/kind-voltha/releases/${branch}"
+         else
+           echo "on master, using default settings for kind-voltha"
+         fi
          cd $WORKSPACE/kind-voltha/
          DEPLOY_K8S=n WAIT_ON_DOWN=y ./voltha down
          kubectl delete deployment voltctl || true