Add dest_bucket field to PushImageRequest proto

BUG=chromium:1159569
TEST=./generate.sh

Change-Id: Iebbec4f5de3ee761da7fa0ef3849a82a82f4479a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2599476
Auto-Submit: Jack Neus <jackneus@google.com>
Reviewed-by: George Engelbrecht <engeg@google.com>
Commit-Queue: George Engelbrecht <engeg@google.com>
2 files changed