Merge "aconfig: require exactly one bug field" into main am: 9997fdba am:...

Merge "aconfig: require exactly one bug field" into main am: 9997fdba am: 0e188d22 am: ac0db9fc

Original change: https://android-review.googlesource.com/c/platform/build/+/2676955



Change-Id: I0ea8b5129529d7b07dafbae47ba8a8fdd2b94ceb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>