Merge "Passing the default apex version to the apexer" am: 5b96d358

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2104336



Change-Id: I8e43672285f5612f5f06730b144c2854a54a57e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>