Use paths to determine build targets for treble_build am: ca63627bbe am: 54176d5cbb am: 0884170341 am: 19b570ff5c

Original change: https://android-review.googlesource.com/c/platform/tools/treble/+/2132556

Change-Id: I10bff771fcca07137732cb8688da19ad8884e01f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>