Temporary workaround for intermittent MediaStore_FilesTest failure

There is a race condition between cts writting and media provider
reading when inserting audio media file.

Change-Id: I9a2274eba86370c90b6fb43158547e24edeac8d6
Signed-off-by: Roger Ma <roma@nvidia.com>
diff --git a/tests/tests/provider/src/android/provider/cts/MediaStore_FilesTest.java b/tests/tests/provider/src/android/provider/cts/MediaStore_FilesTest.java
index 0eae82b..c1b2229 100644
--- a/tests/tests/provider/src/android/provider/cts/MediaStore_FilesTest.java
+++ b/tests/tests/provider/src/android/provider/cts/MediaStore_FilesTest.java
@@ -373,7 +373,7 @@
         values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/mp3");
         Uri fileUri = mResolver.insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, values);
         // give media provider some time to realize there's no album art
-        //SystemClock.sleep(1000);
+        SystemClock.sleep(1000);
         // get its album id
         Cursor c = mResolver.query(fileUri, new String[] { MediaStore.Audio.Media.ALBUM_ID},
                 null, null, null);