[Enhancement] Possible outdated import path for 'github.com/docker/libnetwork'

**Is your enhancement proposal related to a problem? Please describe.**
Currently zadig relys on `github.com/docker/libnetwork`. But its outdated and was moved to https://github.com/moby/moby/tree/master/libnetwork as can be seen from https://github.com/moby/libnetwork.

**Describe the solution you'd like**
Replace `github.com/docker/libnetwork` with `github.com/moby/libnetwork`.


