Avoid repeatedly write files with same names to device. am: bb0ca5fa74 am: ab61142f66

Original change: https://googleplex-android-review.googlesource.com/c/platform/platform_testing/+/23285317

Change-Id: I03ffdd0ef41a534a69683c62eb00477a1b7f056f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>