Convert kube-apiserver to hyperkube.

Part of #108.

Also:
* Added hyperkube cmd (not built by default yet).
* Added version support to hyperkube
* Remove health_check_minions flag from apiserver as it is no longer used with #3733

cmd/hyperkube/hyperkube.go

@@ -0,0 +1,37 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// A binary that can morph into all of the other kubernetes binaries. You can
+// also soft-link to it busybox style.
+package main
+
+import (
+	"os"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/hyperkube"
+	apiserver "github.com/GoogleCloudPlatform/kubernetes/pkg/master/server"
+)
+
+func main() {
+	hk := hyperkube.HyperKube{
+		Name: "hyperkube",
+		Long: "This is an all-in-one binary that can run any of the various Kubernetes servers.",
+	}
+
+	hk.AddServer(apiserver.NewHyperkubeServer())
+
+	hk.RunToExit(os.Args)
+}