bsc: Update TC_chan_rel_conn_fail to subscr_conn_fsm

In OsmoBSC Change-IdI68286d26e2014048b054f39ef29c35fef420cc97 we
introduce a proper subscriber connection state machine which fixes
the order of events during channel release after connection failure.

Change-Id: Ibe9c3205ec11dafcc305ea72aeb33e9152a6458c
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 84d0c38..87150db 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -582,11 +582,6 @@
 	f_ipa_tx(0, ts_RSL_CONN_FAIL_IND(dt.rsl_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
 	/* TODO: different cause values? */
 
-	/* expect BSC to disable the channel */
-	rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX);
-	/* respond with CHAN REL ACK */
-	f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
-
 	/* expect Clear Request from BSC */
 	BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearRequest)) -> value rx_di;
 
@@ -594,6 +589,11 @@
 	var BssmapCause cause := bit2int(rx_di.userData.pdu.bssmap.clearRequest.cause.causeValue);
 	BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
 
+	/* expect BSC to disable the channel */
+	rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX);
+	/* respond with CHAN REL ACK */
+	f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
+
 	/* expect Clear Complete from BSC */
 	BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete));