Merge "Add a system test to check the mk and ninja files generated by...

Merge "Add a system test to check the mk and ninja files generated by incremental build." into main am: 3249ac6d

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3266053



Change-Id: Id6b908d4abd02309b0706ff8094b9baa6bd09632
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>