Change 2g network pc audio test to more realistic network

Bug: webrtc:10138
Change-Id: I6f4b23fe702d26dbbeed05d0d09b79a9a966e40c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/147728
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28752}

audio/test/pc_low_bandwidth_audio_test.cc

diff --git a/audio/test/pc_low_bandwidth_audio_test.cc b/audio/test/pc_low_bandwidth_audio_test.cc
index 60fada9..6f02384 100644
--- a/audio/test/pc_low_bandwidth_audio_test.cc
+++ b/audio/test/pc_low_bandwidth_audio_test.cc
@@ -144,13 +144,14 @@
   LogTestResults();
 }
 
-TEST(PCLowBandwidthAudioTest, PCMobile2GNetwork) {
+TEST(PCLowBandwidthAudioTest, PC40kbpsNetwork) {
   std::unique_ptr<NetworkEmulationManager> network_emulation_manager =
       CreateNetworkEmulationManager();
   BuiltInNetworkBehaviorConfig config;
-  config.link_capacity_kbps = 12;
+  config.link_capacity_kbps = 40;
   config.queue_length_packets = 1500;
   config.queue_delay_ms = 400;
+  config.loss_percent = 1;
   auto fixture = CreateTestFixture(
       GetMetricTestCaseName(),
       CreateTwoNetworkLinks(network_emulation_manager.get(), config),