bts: ensure fake_trx BB CTRL IP is used from main component

.. not just from the ConnHdlr component, as in previous patch

Change-Id: I3db2884d2519dfd4ae08ff1a4dae5b488677da4c
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index a6c07a4..890c216 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -626,8 +626,8 @@
 private function f_main_trxc_connect() runs on test_CT {
 	map(self:BB_TRXC, system:BB_TRXC);
 	var Result res;
-	res := TRXC_CodecPort_CtrlFunct.f_IPL4_connect(BB_TRXC, "127.0.0.1", mp_bb_trxc_port,
-							"127.0.0.1", 0, -1, {udp:={}}, {});
+	res := TRXC_CodecPort_CtrlFunct.f_IPL4_connect(BB_TRXC, mp_bb_trxc_ip, mp_bb_trxc_port,
+							"", -1, -1, {udp:={}}, {});
 	g_bb_trxc_conn_id := res.connId;
 }