mgcp/test: Only include conn_mode into test output

Currently the conn_mode and the output_enabled flags are printed to
stdout.

This patch modifies this to print the output_enabled flags to stderr
instead. The bits in conn_mode are shown as RECV, SEND, and LOOP.
This does not reduce the significance of the test, since there is an
assertion already that verifies the values of the output_enabled
flags with respect to the conn_mode.

Sponsored-by: On-Waves ehf
diff --git a/openbsc/tests/mgcp/mgcp_test.ok b/openbsc/tests/mgcp/mgcp_test.ok
index fbe2566..76806f9 100644
--- a/openbsc/tests/mgcp/mgcp_test.ok
+++ b/openbsc/tests/mgcp/mgcp_test.ok
@@ -19,7 +19,7 @@
 Dummy packets: 1
 Detected packet duration: 40
 Requested packetetization period: 20-20
-Connection mode: 1, BTS output enabled, NET output disabled
+Connection mode: 1: RECV
 Testing MDCX3
 Dummy packets: 1
 Packet duration not set
@@ -29,35 +29,35 @@
 Dummy packets: 1
 Detected packet duration: 40
 Requested packetetization period: 20-20
-Connection mode: 3, BTS output enabled, NET output enabled
+Connection mode: 3: SEND RECV
 Testing MDCX4_PT1
 Dummy packets: 1
 Detected packet duration: 40
 Requested packetetization period: 20-40
-Connection mode: 3, BTS output enabled, NET output enabled
+Connection mode: 3: SEND RECV
 Testing MDCX4_PT2
 Dummy packets: 1
 Detected packet duration: 40
 Requested packetetization period: 20-20
-Connection mode: 3, BTS output enabled, NET output enabled
+Connection mode: 3: SEND RECV
 Testing MDCX4_PT3
 Dummy packets: 1
 Detected packet duration: 40
 Requested packetization period not set
-Connection mode: 3, BTS output enabled, NET output enabled
+Connection mode: 3: SEND RECV
 Testing MDCX4_SO
 Detected packet duration: 40
 Requested packetetization period: 20-20
-Connection mode: 2, BTS output disabled, NET output enabled
+Connection mode: 2: SEND
 Testing DLCX
 Detected packet duration: 20
 Requested packetization period not set
-Connection mode: 0, BTS output disabled, NET output disabled
+Connection mode: 0: NONE
 Testing CRCX_ZYN
 Dummy packets: 1
 Packet duration not set
 Requested packetization period not set
-Connection mode: 1, BTS output enabled, NET output disabled
+Connection mode: 1: RECV
 Testing EMPTY
 Testing SHORT1
 Testing SHORT2
@@ -68,7 +68,7 @@
 Testing DLCX
 Detected packet duration: 20
 Requested packetization period not set
-Connection mode: 0, BTS output disabled, NET output disabled
+Connection mode: 0: NONE
 Testing CRCX
 Re-transmitting CRCX
 Testing RQNT1