Add Dns CTS test.

Checks java and native calls.
Adds some performance tests, but need to look at how that should be used.

Change-Id: I158164829da13302d9532275cef3482c4736168e
diff --git a/tests/cts/net/Android.mk b/tests/cts/net/Android.mk
index f69c4c3..a6543b3 100644
--- a/tests/cts/net/Android.mk
+++ b/tests/cts/net/Android.mk
@@ -23,6 +23,8 @@
 
 LOCAL_JAVA_LIBRARIES := android.test.runner voip-common
 
+LOCAL_JNI_SHARED_LIBRARIES := libnativedns_jni
+
 # include CtsTestServer as a temporary hack to free net.cts from cts.stub.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
@@ -34,3 +36,5 @@
 #LOCAL_SDK_VERSION := current
 
 include $(BUILD_CTS_PACKAGE)
+
+include $(call all-makefiles-under,$(LOCAL_PATH))