BTS_Tests: call f_pcu_data_req with correct timeslot

We are calling f_pcu_data_req() with SAPI PCU_IF_SAPI_AGCH or SAPI
PCU_IF_SAPI_PCH and use ts_nr 7.

In this particular case, the parameter ts_nr has no effect (see pcu_sock.c in
osmo-bts.git). However, to prevent confusion, lets use ts_nr 0 since AGCH and
PCH are actually is on TS 0 (on TRX 0).

Related: OS#5927
Change-Id: I20566de992809d6c857c9062bf0fb799efa43e45
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 3602746..93b0ddf 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -5792,7 +5792,7 @@
 	f_l1_tune(L1CTL);
 
 	f_TC_pcu_act_req(0, 0, 7, true);
-	f_pcu_data_req(0, 0, 7, 0, 0, PCU_IF_SAPI_AGCH, c_PCU_DATA);
+	f_pcu_data_req(0, 0, 0, 0, 0, PCU_IF_SAPI_AGCH, c_PCU_DATA);
 
 	T.start;
 	alt {
@@ -5817,13 +5817,13 @@
 
 	if (mp_pcuif_version < 11) {
 		/* three characters prefix: last 3 digits of IMSI as ASCII */
-		f_pcu_data_req(0, 0, 7, 0, 0, PCU_IF_SAPI_PCH, '313233'O & c_PCU_DATA);
+		f_pcu_data_req(0, 0, 0, 0, 0, PCU_IF_SAPI_PCH, '313233'O & c_PCU_DATA);
 	} else {
 		var PCUIF_pch_dt pch_dt;
 		pch_dt.tlli := '01020304'O;
 		pch_dt.imsi := "00101000000000123";
 		pch_dt.data := c_PCU_DATA;
-		f_pcu_data_req(0, 0, 7, 0, 0, PCU_IF_SAPI_PCH_DT, enc_PCUIF_pch_dt(pch_dt));
+		f_pcu_data_req(0, 0, 0, 0, 0, PCU_IF_SAPI_PCH_DT, enc_PCUIF_pch_dt(pch_dt));
 	}
 
 	T.start;