Add moby-engine to docker dependencies for debian packages
Add moby-engine to docker dependencies for debian packages

This change allows nvidia-docker2 to be installed on systems
where moby-engine is used instead of docker-ce, docker-ee, or
docker.io.

Signed-off-by: Evan Lezar <f5bd33c68a662d0bee821507c8ce5711bc3cfd7e@nvidia.com>

NVIDIA/nvidia-docker