Merge "Implement multitree lunch" am: 9d1b28ed am: 1080b9f3 am: 9ebe2e27...

Merge "Implement multitree lunch" am: 9d1b28ed am: 1080b9f3 am: 9ebe2e27 am: b233bcfe am: ce2b4e01

Original change: https://android-review.googlesource.com/c/platform/build/+/2060107



Change-Id: Ia8834174219c7d634d825a484296423d555570b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>