Move test zip file to assets

This is a no-op refactoring which move test data from resources
to assets, and repacking zip file to contain netstats sub-folder.

This is needed for later patches to put more test data points,
and having easier way to access them in batch.

Test: atest ConnectivityBenchmarkTests
Bug: 269409485
Change-Id: I1d09ac0187c9ce12982161243929d8e10483da45
diff --git a/tests/benchmark/Android.bp b/tests/benchmark/Android.bp
index 77383ad..6ea5347 100644
--- a/tests/benchmark/Android.bp
+++ b/tests/benchmark/Android.bp
@@ -29,6 +29,7 @@
         "src/**/*.kt",
         "src/**/*.aidl",
     ],
+    asset_dirs: ["assets"],
     static_libs: [
         "androidx.test.rules",
         "mockito-target-minus-junit4",