Constrained Network test does not fail fast under fatal conditions.

media/tools/constrained_network_server/traffic_control_test.py

Index: media/tools/constrained_network_server/traffic_control_test.py
diff --git a/media/tools/constrained_network_server/traffic_control_test.py b/media/tools/constrained_network_server/traffic_control_test.py
index a84462f7a50f18f65e90d22392597ea8c8842af2..18c73a14571e3e581893f80de7b8400efc45adfc 100644
--- a/media/tools/constrained_network_server/traffic_control_test.py
+++ b/media/tools/constrained_network_server/traffic_control_test.py
@@ -75,10 +75,8 @@ class TrafficControlTests(unittest.TestCase):
         'server_port': 33333,
         'bandwidth': 2000
     }
-    # Convert Kbps to Kbit.
-    rate = config['bandwidth'] * 8
-    class_detail = ('class htb 1:%x root prio 0 rate %dKbit ceil %dKbit' %
-                    (config['port'], rate, rate))
+    class_detail = ('class htb 1:%x root prio 0 rate %dkbit ceil %dkbit' %
+                    (config['port'], config['bandwidth'], config['bandwidth']))
 
     # Add root qdisc.
     traffic_control._AddRootQdisc(config['interface'])