Copy preload2.jar to build artifacts

Test: local build
Bug: 33492076
Change-Id: I76de648cd1947e49278a678a4c6f1dce8092bbd4
diff --git a/tools/preload2/Android.mk b/tools/preload2/Android.mk
index 769db6b..d3ee1d3 100644
--- a/tools/preload2/Android.mk
+++ b/tools/preload2/Android.mk
@@ -17,6 +17,8 @@
 LOCAL_MODULE:= preload2
 
 include $(BUILD_HOST_JAVA_LIBRARY)
+# Copy to build artifacts
+$(call dist-for-goals,dist_files,$(LOCAL_BUILT_MODULE):$(LOCAL_MODULE).jar)
 
 # Copy the preload-tool shell script to the host's bin directory.
 include $(CLEAR_VARS)