Fix runtest cts-net

Change-Id: Ia3f7e058c48a8c84e465602e1af172ba75ff1154
diff --git a/testrunner/test_defs.xml b/testrunner/test_defs.xml
index 6dfb14b..55c58e4 100644
--- a/testrunner/test_defs.xml
+++ b/testrunner/test_defs.xml
@@ -346,7 +346,7 @@
 <test name="cts-net"
     build_path="cts/tests/tests/net"
     package="com.android.cts.net"
-    runner="android.test.InstrumentationTestRunner"
+    runner="android.test.InstrumentationCtsTestRunner"
     coverage_target="framework"
     suite="cts" />