pgw: Set Gy CCA Result-Code based on settings

This allows the test to change the Result-Code being transmitted during
Gy CCA at any time.

Related: SYS#6845
Change-Id: I2c3b1057908c1c76a55c41a7f45728a0fdee3cf0
diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 55720ee..74c2e8c 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -686,7 +686,7 @@
 				}
 			} else {
 				tx_dia := ts_DIA_Gy_CCA(g_rx_gy.hop_by_hop_id, g_rx_gy.end_to_end_id, sess_id,
-							 req_type, req_num);
+							DIAMETER_SUCCESS, req_type, req_num);
 			}
 			Gy_UNIT.send(tx_dia);
 		}