Added ports for subnets to router

Implemented cluster update

Replaced glog by klog

Changed usage of NetworService

Now Reconcile creates an instance of NetworkService on each run. So in
theory it will be possible to configure OS-Credentials per cluster.

Added router to ClusterStatus

Changed to only one Router

Resynced Gopkg.lock

Improved logs

Reconciling of networks now log the default log level

Added Docs to ClusterStatus.Network

Recreated zz_generated with new types

At the current point in time, we don't need multiple subnets, and we are
not even able to configure them.

Beside this, I refactored the reconciling code to return network, subnet
and router instead of manipulating pointer data.

See also
kubernetes-retired/kubefed#208 (comment)

We don't need the clientset_generated any more.