pcu: TC_n3103_max_t3169: Send TLLI in UL blocks

Otherwise MS is not behaving correctly and newer versions of PCU (more
strict checking TLLI and behaving better) may not accept it and make the
test fail.

Related: OS#1940
Change-Id: I2efa5ce97bf2c82727efcbdebdc0a0b686664e12
diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index f42a85b..333a68d 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -1405,7 +1405,7 @@
 	/* Establish an Uplink TBF */
 	f_ms_establish_ul_tbf(ms);
 
-	f_ms_tx_ul_data_block_multi(ms, 5);
+	f_ms_tx_ul_data_block_multi(ms, 5, with_tlli := true);
 	exp_ul_ack_sub := tr_UlAckNackGprs(*, tr_AckNackDescription('1'B), *);
 	exp_ul_ack := tr_RLCMAC_UL_ACK_NACK_GPRS(ms.ul_tbf.tfi, exp_ul_ack_sub);