[VOL-4483] Updated TT suite to use uniTag subscriber provisioning

Change-Id: I04a08e20752e6809ee8b997b3fb9318c73cf9702
diff --git a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
index 9a43a5a..a9372a5 100755
--- a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
+++ b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
@@ -78,6 +78,11 @@
 ${print2console}    False
 ${data_dir}    ../data
 
+# flag to choose the subscriber provisioning command type in ONOS
+# TT often provision a single services for a subscriber (eg: hsia, voip, ...) one after the other.
+# if set to True, command used is "volt-add-subscriber-unitag"
+# if set to False, comand used is "volt-add-subscriber-access"
+${unitag_sub}    False
 
 *** Test Cases ***
 ONU State Test