PCU_Tests_SNS: fix TC_pcuif_rach

The tesctcase TC_pcuif_rach expects an immediate assignment message on
the AGCH but the template still uses the now deprecated (old v10 PCUIF)
SAPI PCU_IF_SAPI_AGCH. With PCUIF v.11 we must use PCU_IF_SAPI_AGCH_2

Related: OS#5927
Change-Id: Ie8b2e21e184282f70c92d6b9f716cfda1405ef4d
diff --git a/pcu/PCU_Tests_SNS.ttcn b/pcu/PCU_Tests_SNS.ttcn
index 012699e..b90fe37 100644
--- a/pcu/PCU_Tests_SNS.ttcn
+++ b/pcu/PCU_Tests_SNS.ttcn
@@ -361,7 +361,7 @@
 				     fn:=42, arfcn:=871, qta:=0));
 	PCU.receive(t_SD_PCUIF(g_pcu_conn_id,
 			       tr_PCUIF_DATA_REQ(bts_nr:=0, trx_nr:=0, ts_nr:=0, block_nr:=?, fn:=?,
-						 sapi:=PCU_IF_SAPI_AGCH, data:=?)));
+						 sapi:=PCU_IF_SAPI_AGCH_2, data:=?)));
 	setverdict(pass);
 	f_clean_ns_codec();
 }