Merge "Allow duplicate release config maps and build flag declarations" into main am: afac5b33

Original change: https://android-review.googlesource.com/c/platform/build/+/3006423



Change-Id: Id41e705deb111cd79f2d27bdaeb1a3f2f804dcef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>