Currently we 're using manifest-tool to build the multiarch image.

However, docker client has start to support build-in manifest to create and push the multiarch manifest, the PR: docker/cli#138 for that change bas been merged.

We need to replace the manifest-tool with docker manifest... to build the multiarch image.

However, the docker manifest... is experimental feature for now, we need to edit the config.json and set experimental to enabled.

/kind enhancement
/area config
/assign
/cc @gyliu513