[automerger skipped] Switch default execution strategy to racing for developer builds am: 524428a6 am: 7a02fa7b am: ae8d7801 am: 50d1196d -s ours

am skip reason: Change-Id I46bc3ff9c0d8d08e8f3aaa15076eb606737355af with SHA-1 f16d7988 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/13292491

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2bd80deba74b93b368da6c4509aa804869e792a9