Replace godep with dep

vendor/k8s.io/apiserver/README.md

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+# apiserver
+
+Generic library for building a Kubernetes aggregated API server.
+
+
+## Purpose
+
+This library contains code to create Kubernetes aggregation server complete with delegated authentication and authorization, 
+`kubectl` compatible discovery information, optional admission chain, and versioned types.  It's first consumers are
+`k8s.io/kubernetes`, `k8s.io/kube-aggregator`, and `github.com/kubernetes-incubator/service-catalog`.
+
+
+## Compatibility
+
+There are *NO compatibility guarantees* for this repository, yet.  It is in direct support of Kubernetes, so branches
+will track Kubernetes and be compatible with that repo.  As we more cleanly separate the layers, we will review the
+compatibility guarantee.  We have a goal to make this easier to use in 2017.
+
+
+## Where does it come from?
+
+`apiserver` is synced from https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/apiserver.
+Code changes are made in that location, merged into `k8s.io/kubernetes` and later synced here.
+
+
+## Things you should *NOT* do
+
+ 1. Directly modify any files under `pkg` in this repo.  Those are driven from `k8s.io/kuberenetes/staging/src/k8s.io/apiserver`.
+ 2. Expect compatibility.  This repo is changing quickly in direct support of
+    Kubernetes and the API isn't yet stable enough for API guarantees.