HNBGW_Tests: use realistic codec name and payload type in MGCP

When we respond to the MGCP requests from OsmoHNBGW, we use codec name
"FOO" and payload type 23 in the SDP part of the response. This is
obviously an invalid codec and osmo-mgcp-client will not tolerate this
anymore. Let's use a more realistic payload type and codec name, like
112 and "VND.3GPP.IUFP"

Change-Id: Ib53ff7a878087b497e6ff27f786c9ab1297f3d5f
---
M hnbgw/HNBGW_Tests.ttcn
1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/hnbgw/HNBGW_Tests.ttcn b/hnbgw/HNBGW_Tests.ttcn
index e5f227e..f0b5cfe 100644
--- a/hnbgw/HNBGW_Tests.ttcn
+++ b/hnbgw/HNBGW_Tests.ttcn
@@ -165,8 +165,8 @@
 		mgw_rtp_port := 20000,
 		mgcp_connection_id := '22222'H
 	},
-	rtp_payload_type := 23,
-	rtp_sdp_format := "FOO",
+	rtp_payload_type := 112,
+	rtp_sdp_format := "VND.3GPP.IUFP",
 	hnb_rtp_ip := "127.1.1.1",
 	hnb_rtp_port := 10001,
 	cn_rtp_ip := "127.1.3.1",

