msc: Make TC_lu_and_mo_call succeed with osmo-mg enabled osmo-msc

This is for patch https://gerrit.osmocom.org/#/c/4980 in osmo-msc

Change-Id: Ieec52d5e0da776d35d6a473bd726b368af9d5c66
diff --git a/library/MGCP_Templates.ttcn b/library/MGCP_Templates.ttcn
index 182868e..7f10bd2 100644
--- a/library/MGCP_Templates.ttcn
+++ b/library/MGCP_Templates.ttcn
@@ -74,8 +74,8 @@
 		sdp := sdp
 	}
 
-	template MgcpCommand tr_CRCX := {
-		line := t_MgcpCmdLine("CRCX", ?, ?),
+	template MgcpCommand tr_CRCX(template MgcpEndpoint ep := ?) := {
+		line := t_MgcpCmdLine("CRCX", ?, ep),
 		params := *,
 		sdp := *
 	}