Use 2 PON ports and 2 ONUs per port for periodic e2e test

Change-Id: I10b658fa31dc58f3dc3f3cbcddaa3e73b32afeb9
diff --git a/jjb/pipeline/voltha-go-tests.groovy b/jjb/pipeline/voltha-go-tests.groovy
index 841bd35..751c814 100644
--- a/jjb/pipeline/voltha-go-tests.groovy
+++ b/jjb/pipeline/voltha-go-tests.groovy
@@ -53,6 +53,7 @@
            export KUBECONFIG="$(./bin/kind get kubeconfig-path --name="voltha-minimal")"
            export VOLTCONFIG="/home/jenkins/.volt/config-minimal"
            export PATH=$WORKSPACE/kind-voltha/bin:$PATH
+           export ROBOT_VAR_FILE=$WORKSPACE/voltha-system-tests/tests/data/${robotVarFile}
            make -C $WORKSPACE/voltha-system-tests sanity-kind || true
            '''
       }