Switch to github.com/golang/dep for vendoring

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>

vendor/k8s.io/kubernetes/cmd/libs/go2idl/deepcopy-gen/BUILD

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+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+)
+
+go_binary(
+    name = "deepcopy-gen",
+    library = ":go_default_library",
+    tags = ["automanaged"],
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    tags = ["automanaged"],
+    deps = [
+        "//vendor:github.com/golang/glog",
+        "//vendor:github.com/spf13/pflag",
+        "//vendor:k8s.io/gengo/args",
+        "//vendor:k8s.io/gengo/examples/deepcopy-gen/generators",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/cmd/libs/go2idl/deepcopy-gen/main.go

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+/*
+Copyright 2015 The Kubernetes Authors.
+
+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.
+*/
+
+// deepcopy-gen is a tool for auto-generating DeepCopy functions.
+//
+// Given a list of input directories, it will generate functions that
+// efficiently perform a full deep-copy of each type.  For any type that
+// offers a `.DeepCopy()` method, it will simply call that.  Otherwise it will
+// use standard value assignment whenever possible.  If that is not possible it
+// will try to call its own generated copy function for the type, if the type is
+// within the allowed root packages.  Failing that, it will fall back on
+// `conversion.Cloner.DeepCopy(val)` to make the copy.  The resulting file will
+// be stored in the same directory as the processed source package.
+//
+// Generation is governed by comment tags in the source.  Any package may
+// request DeepCopy generation by including a comment in the file-comments of
+// one file, of the form:
+//   // +k8s:deepcopy-gen=package
+//
+// Packages can request that the generated DeepCopy functions be registered
+// with an `init()` function call to `Scheme.AddGeneratedDeepCopyFuncs()` by
+// changing the tag to:
+//   // +k8s:deepcopy-gen=package,register
+//
+// DeepCopy functions can be generated for individual types, rather than the
+// entire package by specifying a comment on the type definion of the form:
+//   // +k8s:deepcopy-gen=true
+//
+// When generating for a whole package, individual types may opt out of
+// DeepCopy generation by specifying a comment on the of the form:
+//   // +k8s:deepcopy-gen=false
+//
+// Note that registration is a whole-package option, and is not available for
+// individual types.
+package main
+
+import (
+	"path/filepath"
+
+	"k8s.io/gengo/args"
+	"k8s.io/gengo/examples/deepcopy-gen/generators"
+
+	"github.com/golang/glog"
+	"github.com/spf13/pflag"
+)
+
+func main() {
+	arguments := args.Default()
+
+	// Override defaults.
+	arguments.OutputFileBaseName = "deepcopy_generated"
+	arguments.GoHeaderFilePath = filepath.Join(args.DefaultSourceTree(), "k8s.io/kubernetes/hack/boilerplate/boilerplate.go.txt")
+
+	// Custom args.
+	customArgs := &generators.CustomArgs{}
+	pflag.CommandLine.StringSliceVar(&customArgs.BoundingDirs, "bounding-dirs", customArgs.BoundingDirs,
+		"Comma-separated list of import paths which bound the types for which deep-copies will be generated.")
+	arguments.CustomArgs = customArgs
+
+	// Run it.
+	if err := arguments.Execute(
+		generators.NameSystems(),
+		generators.DefaultNameSystem(),
+		generators.Packages,
+	); err != nil {
+		glog.Fatalf("Error: %v", err)
+	}
+	glog.V(2).Info("Completed successfully.")
+}