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/L3_Templates.ttcn b/library/L3_Templates.ttcn
index 549997e..2050e3d 100644
--- a/library/L3_Templates.ttcn
+++ b/library/L3_Templates.ttcn
@@ -585,6 +585,49 @@
 	}
 }
 
+template PDU_ML3_NW_MS tr_ML3_MT_CC_CONNECT(integer tid) := {
+	discriminator := '0011'B,
+	tiOrSkip := {
+		transactionId := {
+			tio := int2bit(tid, 3),
+			tiFlag := '1'B,
+			tIExtension := omit
+		}
+	},
+	msgs := {
+		cc := {
+			connect_NW_MS := {
+				messageType := '000111'B,
+				nsd := '00'B,
+				facility := *,
+				progressIndicator := *,
+				connectedNumber := *,
+				connectedSubAddress := *,
+				user_user := *
+			}
+		}
+	}
+}
+
+template (value) PDU_ML3_MS_NW ts_ML3_MO_CC_CONNECT_ACK(integer tid) := {
+	discriminator := '0011'B,
+	tiOrSkip := {
+		transactionId := {
+			tio := int2bit(tid, 3),
+			tiFlag := '0'B,
+			tIExtension := omit
+		}
+	},
+	msgs := {
+		cc := {
+			connectAck := {
+				messageType := '001111'B,
+				nsd := '00'B
+			}
+		}
+	}
+}
+
 template PDU_ML3_NW_MS tr_ML3_MT_CC_DISC(integer tid) := {
 	discriminator := '0011'B,
 	tiOrSkip := {