Exporting NAME only for master tests

Change-Id: I61b4bceec1210b9b8435187f66f294aa7da359f3
diff --git a/jjb/pipeline/voltha-openonu-go-tests.groovy b/jjb/pipeline/voltha-openonu-go-tests.groovy
index 27daa51..e86d61f 100755
--- a/jjb/pipeline/voltha-openonu-go-tests.groovy
+++ b/jjb/pipeline/voltha-openonu-go-tests.groovy
@@ -229,7 +229,10 @@
           mkdir -p $ROBOT_LOGS_DIR/1t8gem
           export ROBOT_MISC_ARGS="-d $ROBOT_LOGS_DIR"
           export TARGET_1T8GEM=1t8gem-openonu-go-adapter-test
-          export NAME=voltha_voltha
+
+          if [ "${branch}" != "voltha-2.6" ]; then
+            export NAME=voltha_voltha
+          fi
 
           make -C $WORKSPACE/voltha-system-tests \$TARGET_1T8GEM || true