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 am: 52041594

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



Change-Id: I871843e287ae48ca046afce97eab3a48c35861fb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>