Fix an issue with real_state_differ check, GCP API adds the region and
the project name to the network so we need to remove those before
checking if the network in the state match.

…tHop

Example:

```
{}:{
  machine =
    { config, pkgs, resources, lib, ... }:
    let
    in
    {
      deployment.targetEnv = "gce";
      ....
    };

  ec2machine = {resources, lib, ...}:
  {
    deployment.targetEnv = "ec2";
    ...

  };
  resources.gceRoutes.lb-default = {resources, ...}:{
    destination = resources.machines.ec2machine;
    priority = 800;
    nextHop = resources.machines.machine ;
    tags = [ "workers" ] ;
  };

}
```

Be aware that nextHop can only be a GCE machine, if not an exception
will be raised

If nextHop or destination is a machine, wait for them to be deployed
before creating the route.

Add a resource for GCE routes