cross-build should not use cli unless specified

- #9103 enabled users to run build with docker compatible daemon without docker cli, for non-cross-platform build.
- However, corss-platform builds still uses docker cli even users not specified, we should enable to use the docker-compatible backend build without cli for cross-platfrom builds as well.
- @ericzzzzzzz made some attempts, here is what we got
- We can specify platform with buildOption when issuing Build request to docker backend, if docker backend host machine has [qemu](https://docs.docker.com/build/building/multi-platform/#qemu) set-up,
- We can do for minikube with `minikube ssh "docker run --privileged --rm tonistiigi/binfmt --install all"` for our github action ci
- For our internal kokoro CI, it seems that we need to upgrade docker engine version as well to make cross-platform builds work without using buildx(docker cli). To upgrade docker engine, please see here : https://docs.docker.com/engine/install/ubuntu/

The ask in this issue, is to enable docker cross-platform builds without cli