change the s-tag to be used for ALPHe3d1cf5c ONU for multi-olt DT workflow tests

Change-Id: I85916b0e9494a66012b66692a663c8acce0d81ac
diff --git a/tests/data/dt-berlin-pod-multi-olt-sadis-DT.json b/tests/data/dt-berlin-pod-multi-olt-sadis-DT.json
index 4a9933c..2ae169a 100644
--- a/tests/data/dt-berlin-pod-multi-olt-sadis-DT.json
+++ b/tests/data/dt-berlin-pod-multi-olt-sadis-DT.json
@@ -78,7 +78,7 @@
                {
                 "uniTagMatch": 4096,
                 "ponCTag": 4096,
-                "ponSTag": 11,
+                "ponSTag": 12,
                 "technologyProfileId": 64,
                 "upstreamBandwidthProfile": "User_Bandwidth1",
                 "downstreamBandwidthProfile": "User_Bandwidth2",