Replace godep with dep

vendor/k8s.io/kubernetes/cluster/images/etcd-version-monitor/README.md

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+# etcd-version-monitor
+
+This is a tool for exporting metrics related to etcd version, like etcd
+server's binary version, cluster version, and counts of different kinds of
+gRPC calls (which is a characteristic of v3), etc. These metrics are in
+prometheus format and can be scraped by a prometheus server.
+The metrics are exposed at the http://localhost:9101/metrics endpoint.
+
+**RUNNING THE TOOL**
+
+To run this tool as a docker container:
+- make build
+- docker run --net=host -i -t gcr.io/google_containers/etcd-version-monitor:test /etcd-version-monitor --logtostderr
+
+To run this as a pod on the kubernetes cluster:
+- Place the 'etcd-version-monitor.yaml' in the manifests directory of
+  kubelet on the master machine.
+
+*Note*: This tool has to run on the same machine as etcd, as communication
+with etcd is over localhost.
+
+**VERIFYING THE TOOL**
+
+- Goto [http://localhost:9101/metrics](http://localhost:9101/metrics) in order to view the exported metrics.
+- The metrics prefixed with "etcd_" are the ones of interest to us.