[automerge] Add owners for version_defaults.mk 2p: 34ec5ba1 am: dfcbebca am: a60de989

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/21040380



Change-Id: I2597b801ac1137169580ae31364ef9d924bcf65c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>