Roll out rolling subprocess output feature to 5% users am: 3110fd2ab6

Original change: https://android-review.googlesource.com/c/platform/tools/asuite/+/3366927

Change-Id: I829b7f3bc7541f96e59b6f09952707402f211d0b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>