Call f_bssap_start in TC_cr_before_reset

This function starts the SCCP component which will relay the BSSAP
messages to/from port SCCP_SP_PORT which is connected to BSSAP_DIRECT.

Ticket: OS#3286
Change-Id: Icee085d5fe610061c85d7fe7cf62cbccd8cfa556
diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index df1d1c2..f70edd0 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -1765,6 +1765,8 @@
 	var boolean reset_ack_seen := false;
 	f_init_bssap_direct();
 
+	f_bssap_start(g_bssap[0]);
+
 	/* Make a blind connection attemt, to trigger the deadlock condition */
 	BSSAP_DIRECT.send(ts_BSSAP_CONNECT_req(g_bssap[0].sccp_addr_peer, g_bssap[0].sccp_addr_own, 1, omit));