Fix openonu-go "Onu Etcd Data Check" test due to changes in format of persisted data stored on KV store.

Change-Id: Ide9b69281fc1efd26f5c4ee9d8d73ae2826fff5e
diff --git a/tests/openonu-go-adapter/Voltha_ONUUtilities.robot b/tests/openonu-go-adapter/Voltha_ONUUtilities.robot
index 84cc738..edb7a36 100755
--- a/tests/openonu-go-adapter/Voltha_ONUUtilities.robot
+++ b/tests/openonu-go-adapter/Voltha_ONUUtilities.robot
@@ -125,7 +125,9 @@
     ${serialnumberlist}=    Create List
     FOR    ${INDEX}    IN RANGE    0    ${length}
         ${value}=    Get From List    ${jsondata}    ${INDEX}
-        ${tp_path}=    Get From Dictionary    ${value['uni_config'][0]}    tp_path
+        # TODO: The TP ID is hardcoded to 64 below. It is fine when testing single-tcont workflow.
+        # When testing multi-tcont this may need some adjustment.
+        ${tp_path}=    Get From Dictionary    ${value['uni_config'][0]['PersTpPathMap']}    64
         ${pononuuniid}=    Read Pon Onu Uni String    ${tp_path}
         ${list_id}=    Get Index From List    ${pononuuniidlist}   ${pononuuniid}
         Should Be Equal As Integers    ${list_id}    -1