podman-compose config should append network name

**Is your feature request related to a problem? Please describe.**
See differnet between `podman-compose` and `docker-compose` using reproduce case in https://github.com/containers/podman-compose/issues/620

input
```
```

docker-compose config output
```
networks:
default:
name: devcontainer_default
```

podman-compose config output
```
```

**Describe the solution you'd like**
https://github.com/containers/podman-compose/issues/621

**Describe alternatives you've considered**
Implement in python.

**Additional context**