Publish cmd/config as a Kustomize sub-command

kustomize/go.mod

@@ -7,5 +7,14 @@ require (
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/pflag v1.0.5
 	sigs.k8s.io/kustomize/api v0.2.0
+	sigs.k8s.io/kustomize/cmd/config v0.0.0
+	sigs.k8s.io/kustomize/kyaml v0.0.0
+	sigs.k8s.io/kustomize/pseudo/k8s v0.1.0
 	sigs.k8s.io/yaml v1.1.0
 )
+
+replace (
+	sigs.k8s.io/kustomize/cmd/config v0.0.0 => ../cmd/config
+	sigs.k8s.io/kustomize/kyaml v0.0.0 => ../kyaml
+	sigs.k8s.io/kustomize/pseudo/k8s v0.0.0 => ../pseudo/k8s
+)

kustomize/go.sum

@@ -57,6 +57,8 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-critic/go-critic v0.3.5-0.20190904082202-d79a9f0c64db/go.mod h1:+sE8vrLDS2M0pZkBk0wy6+nLdKexVDrl/jBqQOTDThA=
+github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
+github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-lintpack/lintpack v0.5.2/go.mod h1:NwZuYi2nUHho8XEIZ6SIxihrnPoqBTDqfpXvXAN0sXM=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
@@ -273,6 +275,8 @@ github.com/valyala/fasthttp v1.2.0/go.mod h1:4vX61m6KN+xDduDNwXrhIAVZaZaZiQ1luJk
 github.com/valyala/quicktemplate v1.2.0/go.mod h1:EH+4AkTd43SvgIbQHYu59/cJyxDoOVRUAfrukLPuGJ4=
 github.com/valyala/tcplisten v0.0.0-20161114210144-ceec8f93295a/go.mod h1:v3UYOV9WzVtRmSR+PDvWpU/qWl4Wa5LApYYX4ZtKbio=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
+github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca h1:1CFlNzQhALwjS9mBAUkycX616GzgsuYUOCHA5+HSlXI=
+github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -371,6 +375,8 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d h1:LCPbGQ34PMrwad11aMZ+dbz5SAsq/0ySjRwQ8I9Qwd8=
+gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=

kustomize/internal/commands/config/config.go

@@ -10,20 +10,13 @@ import (
 	"github.com/spf13/cobra"
 	"sigs.k8s.io/kustomize/api/filesys"
 	"sigs.k8s.io/kustomize/api/konfig/builtinpluginconsts"
+	"sigs.k8s.io/kustomize/cmd/config/cmds"
 )
 
 // NewCmdConfig returns an instance of 'config' subcommand.
 func NewCmdConfig(fSys filesys.FileSystem) *cobra.Command {
-	c := &cobra.Command{
-		Use:   "config",
-		Short: "Config Kustomize transformers",
-		Long:  "",
-		Example: `
-	# Save the default transformer configurations to a local directory
-	kustomize config save -d ~/.kustomize/config
-`,
-		Args: cobra.MinimumNArgs(1),
-	}
+	c := cmds.NewConfigCommand("kustomize")
+
 	c.AddCommand(
 		newCmdSave(fSys),
 	)
@@ -57,6 +50,12 @@ func newCmdSave(fSys filesys.FileSystem) *cobra.Command {
 			}
 			return o.RunSave(fSys)
 		},
+		Hidden: true, // Don't display this command, but keep it for backwards compatibility.
+		Deprecated: `The save command is deprecated and will be removed in a future release.
+
+If you require this command file an issue at https://github.com/kubernetes-sigs/kustomize/issues
+so we can capture your requirements.
+`,
 	}
 	c.Flags().StringVarP(
 		&o.saveDirectory,