Add option to add dist build target. am: 14f21bad66

Original change: https://android-review.googlesource.com/c/platform/art/+/2104928

Change-Id: I3f427d0d2235ed03346ae56aaad3df0cdd7e581c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>