Merge "aconfig: separate package name and flag name using dot" into main am: 2ee29fdf

Original change: https://android-review.googlesource.com/c/platform/build/+/2760466



Change-Id: If2bba1ed1cb056ec4f60067a6ba48a1688db3f46
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>