Fix run-gtests.sh for device. am: 98103b061e am: 67c9d8a2d3

Original change: https://android-review.googlesource.com/c/platform/art/+/2458430

Change-Id: I48e0559c2b4295193467c4dbaa91fcd34e6e1ad4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>