[automerger skipped] Convert BuildIgnoreApexContritbutions variable to a boolean am: d15b0703e8 -s ours

am skip reason: Merged-In If899f6eaf5449c2aa789d0bd5b791a3db715c676 with SHA-1 133f72f6dc is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/27148139

Change-Id: I90b41dd103ae8ad1f70449be429665aa9724c116
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>