Merge "Copy the out/soong/build_number.txt file into sdk snapshots" am: d72c8521

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2056132



Change-Id: I65933c6250c4a6b0c26948518f7fdde1b4eca24a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>