Set native-test-timeout for dex2oat test. am: d3f0238f0c

Original change: https://android-review.googlesource.com/c/platform/art/+/2263699

Change-Id: Id3daf593ce90cb957666ec10a7874710a02b7e3b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>