bsc: deterministic TC_ho_in_fail_msc_clears: wait for MGW setup

Randomly, this test issues the Clear Command so fast that the MGW has not yet
been set up, and hence the test cannot possibly see DLCX for endpoint conns
that haven't been set up at all. So, simply wait a bit before clearing.

Change-Id: Idd0b3810916efd02a499e0ac060a6a275265b8c3
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index fb43d5e..0583b30 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -3195,6 +3195,9 @@
 	}
 	log("Handover Command chan_nr is", actual_new_chan_nr);
 
+	/* For deterministic test results, give some time for the MGW endpoint to be configured */
+	f_sleep(1.0);
+
 	/* Now the MSC forwards the RR Handover Command to the other BSC, which
 	 * tells the MS to handover to the new lchan. In this case, the MS
 	 * reports a Handover Failure to the old BSS, which forwards a BSSMAP