rename kube server binaries to kube-

apiserver becomes kube-apiserver
controller-manager -> kube-controller-manager
scheduler and proxy similarly.

Only thing I promise is that right now hack/build-go.sh and
build/release.sh exit with 0.  That's it.  Who knows if any of this
actually works....

docs/getting-started-guides/coreos/units/kube-scheduler.service

@@ -0,0 +1,16 @@
+[Unit]
+After=kube-apiserver.service
+ConditionFileIsExecutable=/opt/bin/kube-scheduler
+Description=Kubernetes Scheduler
+Documentation=https://github.com/GoogleCloudPlatform/kubernetes
+Wants=kube-apiserver.service
+
+[Service]
+ExecStart=/opt/bin/kube-scheduler \
+--logtostderr=true \
+--master=127.0.0.1:8080
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target