MGCP_Test: fix TC_dlcx_wildcarded

Due to the migration to a multithreading scheme the timing behavior of
the stats items has slightly changed. There is now a 1 sec update cycle
in which the stats items are regenerated. This means we have to wait 1
sec. before we can query the endpoints.used stats item.

Change-Id: I90613616f9ff85ca59464dfd45d331ed1a54d9c5
Related: OS#5316

mgw/MGCP_Test.ttcn

@@ -1097,6 +1097,9 @@ module MGCP_Test {
 			resp := mgcp_transceive_mgw(cmd, tr_CRCX_ACK);
 		}
 
+		/* Wait until the stats items have seteled and then check if we get the expected number (all) of
+		 * occupied endpoints */
+		f_sleep(1.0)
 		expect := {
 			{ name := "TTCN3.trunk.virtual-0.common.endpoints.used", mtype := "g", min := n_endpoints, max := n_endpoints}
 		};
@@ -1114,15 +1117,8 @@ module MGCP_Test {
 		cmd := ts_DLCX(get_next_trans_id(), ep);
 		mgcp_transceive_mgw(cmd, rtmpl);
 
-		/* The stats reporter collects multiple samples during the reporting interval and
-		 * reports the highest back to the user. This means we will not immediately get
-		 * the 0 endpoints but an intermediate result instead. */
-		expect := {
-			{ name := "TTCN3.trunk.virtual-0.common.endpoints.used", mtype := "g", min := 0, max := n_endpoints}
-		};
-		f_statsd_expect(expect);
-
 		/* The second interval must resturn a result with 0 endpoints in use. */
+		f_sleep(1.0)
 		expect := {
 			{ name := "TTCN3.trunk.virtual-0.common.endpoints.used", mtype := "g", min := 0, max := 0}
 		};