Add exec module to client-go/util only with required code

staging/src/k8s.io/client-go/Godeps/Godeps.json

 {
 	"ImportPath": "k8s.io/client-go",
-	"GoVersion": "go1.8",
+	"GoVersion": "go1.7",
 	"GodepVersion": "v79",
 	"Packages": [
 		"./..."
@@ -67,6 +67,14 @@
 			"Rev": "cd27f179f2c10c5d300e6d09025b538c475b0d51"
 		},
 		{
+			"ImportPath": "github.com/docker/spdystream",
+			"Rev": "449fdfce4d962303d702fec724ef0ad181c92528"
+		},
+		{
+			"ImportPath": "github.com/docker/spdystream/spdy",
+			"Rev": "449fdfce4d962303d702fec724ef0ad181c92528"
+		},
+		{
 			"ImportPath": "github.com/emicklei/go-restful",
 			"Rev": "ff4f55a206334ef123e4f79bbf348980da81ca46"
 		},
@@ -391,6 +399,10 @@
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
 		{
+			"ImportPath": "k8s.io/apimachinery/pkg/util/httpstream/spdy",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
+		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/intstr",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
@@ -411,6 +423,10 @@
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
 		{
+			"ImportPath": "k8s.io/apimachinery/pkg/util/remotecommand",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
+		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/runtime",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
@@ -451,6 +467,10 @@
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
 		{
+			"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/netutil",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
+		{
 			"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/reflect",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		}

staging/src/k8s.io/client-go/pkg/util/exec/exec.go

-/*
-Copyright 2014 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.
-*/
-
-package exec
-
-import (
-	"io"
-	osexec "os/exec"
-	"syscall"
-	"time"
-)
-
-// ErrExecutableNotFound is returned if the executable is not found.
-var ErrExecutableNotFound = osexec.ErrNotFound
-
-// Interface is an interface that presents a subset of the os/exec API.  Use this
-// when you want to inject fakeable/mockable exec behavior.
-type Interface interface {
-	// Command returns a Cmd instance which can be used to run a single command.
-	// This follows the pattern of package os/exec.
-	Command(cmd string, args ...string) Cmd
-
-	// LookPath wraps os/exec.LookPath
-	LookPath(file string) (string, error)
-}
-
-// Cmd is an interface that presents an API that is very similar to Cmd from os/exec.
-// As more functionality is needed, this can grow.  Since Cmd is a struct, we will have
-// to replace fields with get/set method pairs.
-type Cmd interface {
-	// CombinedOutput runs the command and returns its combined standard output
-	// and standard error.  This follows the pattern of package os/exec.
-	CombinedOutput() ([]byte, error)
-	// Output runs the command and returns standard output, but not standard err
-	Output() ([]byte, error)
-	SetDir(dir string)
-	SetStdin(in io.Reader)
-	SetStdout(out io.Writer)
-	// Stops the command by sending SIGTERM. It is not guaranteed the
-	// process will stop before this function returns. If the process is not
-	// responding, an internal timer function will send a SIGKILL to force
-	// terminate after 10 seconds.
-	Stop()
-}
-
-// ExitError is an interface that presents an API similar to os.ProcessState, which is
-// what ExitError from os/exec is.  This is designed to make testing a bit easier and
-// probably loses some of the cross-platform properties of the underlying library.
-type ExitError interface {
-	String() string
-	Error() string
-	Exited() bool
-	ExitStatus() int
-}
-
-// Implements Interface in terms of really exec()ing.
-type executor struct{}
-
-// New returns a new Interface which will os/exec to run commands.
-func New() Interface {
-	return &executor{}
-}
-
-// Command is part of the Interface interface.
-func (executor *executor) Command(cmd string, args ...string) Cmd {
-	return (*cmdWrapper)(osexec.Command(cmd, args...))
-}
-
-// LookPath is part of the Interface interface
-func (executor *executor) LookPath(file string) (string, error) {
-	return osexec.LookPath(file)
-}
-
-// Wraps exec.Cmd so we can capture errors.
-type cmdWrapper osexec.Cmd
-
-func (cmd *cmdWrapper) SetDir(dir string) {
-	cmd.Dir = dir
-}
-
-func (cmd *cmdWrapper) SetStdin(in io.Reader) {
-	cmd.Stdin = in
-}
-
-func (cmd *cmdWrapper) SetStdout(out io.Writer) {
-	cmd.Stdout = out
-}
-
-// CombinedOutput is part of the Cmd interface.
-func (cmd *cmdWrapper) CombinedOutput() ([]byte, error) {
-	out, err := (*osexec.Cmd)(cmd).CombinedOutput()
-	if err != nil {
-		return out, handleError(err)
-	}
-	return out, nil
-}
-
-func (cmd *cmdWrapper) Output() ([]byte, error) {
-	out, err := (*osexec.Cmd)(cmd).Output()
-	if err != nil {
-		return out, handleError(err)
-	}
-	return out, nil
-}
-
-// Stop is part of the Cmd interface.
-func (cmd *cmdWrapper) Stop() {
-	c := (*osexec.Cmd)(cmd)
-	if c.ProcessState.Exited() {
-		return
-	}
-	c.Process.Signal(syscall.SIGTERM)
-	time.AfterFunc(10*time.Second, func() {
-		if c.ProcessState.Exited() {
-			return
-		}
-		c.Process.Signal(syscall.SIGKILL)
-	})
-}
-
-func handleError(err error) error {
-	if ee, ok := err.(*osexec.ExitError); ok {
-		// Force a compile fail if exitErrorWrapper can't convert to ExitError.
-		var x ExitError = &ExitErrorWrapper{ee}
-		return x
-	}
-	if ee, ok := err.(*osexec.Error); ok {
-		if ee.Err == osexec.ErrNotFound {
-			return ErrExecutableNotFound
-		}
-	}
-	return err
-}
-
-// ExitErrorWrapper is an implementation of ExitError in terms of os/exec ExitError.
-// Note: standard exec.ExitError is type *os.ProcessState, which already implements Exited().
-type ExitErrorWrapper struct {
-	*osexec.ExitError
-}
-
-var _ ExitError = ExitErrorWrapper{}
-
-// ExitStatus is part of the ExitError interface.
-func (eew ExitErrorWrapper) ExitStatus() int {
-	ws, ok := eew.Sys().(syscall.WaitStatus)
-	if !ok {
-		panic("can't call ExitStatus() on a non-WaitStatus exitErrorWrapper")
-	}
-	return ws.ExitStatus()
-}
-
-// CodeExitError is an implementation of ExitError consisting of an error object
-// and an exit code (the upper bits of os.exec.ExitStatus).
-type CodeExitError struct {
-	Err  error
-	Code int
-}
-
-var _ ExitError = CodeExitError{}
-
-func (e CodeExitError) Error() string {
-	return e.Err.Error()
-}
-
-func (e CodeExitError) String() string {
-	return e.Err.Error()
-}
-
-func (e CodeExitError) Exited() bool {
-	return true
-}
-
-func (e CodeExitError) ExitStatus() int {
-	return e.Code
-}

staging/src/k8s.io/client-go/tools/remotecommand/BUILD

@@ -44,8 +44,8 @@ go_library(
         "//vendor/k8s.io/apimachinery/pkg/util/remotecommand:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//vendor/k8s.io/client-go/pkg/api:go_default_library",
-        "//vendor/k8s.io/client-go/pkg/util/exec:go_default_library",
         "//vendor/k8s.io/client-go/rest:go_default_library",
         "//vendor/k8s.io/client-go/transport:go_default_library",
+        "//vendor/k8s.io/client-go/util/exec:go_default_library",
     ],
 )

staging/src/k8s.io/client-go/tools/remotecommand/v4.go

@@ -25,7 +25,7 @@ import (
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/remotecommand"
-	"k8s.io/client-go/pkg/util/exec"
+	"k8s.io/client-go/util/exec"
 )
 
 // streamProtocolV4 implements version 4 of the streaming protocol for attach

staging/src/k8s.io/client-go/util/exec/exec.go

+/*
+Copyright 2014 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.
+*/
+
+package exec
+
+// ExitError is an interface that presents an API similar to os.ProcessState, which is
+// what ExitError from os/exec is.  This is designed to make testing a bit easier and
+// probably loses some of the cross-platform properties of the underlying library.
+type ExitError interface {
+	String() string
+	Error() string
+	Exited() bool
+	ExitStatus() int
+}
+
+// CodeExitError is an implementation of ExitError consisting of an error object
+// and an exit code (the upper bits of os.exec.ExitStatus).
+type CodeExitError struct {
+	Err  error
+	Code int
+}
+
+var _ ExitError = CodeExitError{}
+
+func (e CodeExitError) Error() string {
+	return e.Err.Error()
+}
+
+func (e CodeExitError) String() string {
+	return e.Err.Error()
+}
+
+func (e CodeExitError) Exited() bool {
+	return true
+}
+
+func (e CodeExitError) ExitStatus() int {
+	return e.Code
+}