go.crypto: use golang.org/x/... import paths

LGTM=bradfitz
R=rsc, bradfitz
CC=golang-codereviews
https://golang.org/cl/167190043

ssh/test/agent_unix_test.go

@@ -10,8 +10,8 @@ import (
 	"bytes"
 	"testing"
 
-	"code.google.com/p/go.crypto/ssh"
-	"code.google.com/p/go.crypto/ssh/agent"
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/agent"
 )
 
 func TestAgentForward(t *testing.T) {

ssh/test/cert_test.go

@@ -10,7 +10,7 @@ import (
 	"crypto/rand"
 	"testing"
 
-	"code.google.com/p/go.crypto/ssh"
+	"golang.org/x/crypto/ssh"
 )
 
 func TestCertLogin(t *testing.T) {

ssh/test/session_test.go

@@ -10,8 +10,8 @@ package test
 
 import (
 	"bytes"
-	"code.google.com/p/go.crypto/ssh"
 	"errors"
+	"golang.org/x/crypto/ssh"
 	"io"
 	"strings"
 	"testing"

ssh/test/test_unix_test.go

@@ -21,8 +21,8 @@ import (
 	"testing"
 	"text/template"
 
-	"code.google.com/p/go.crypto/ssh"
-	"code.google.com/p/go.crypto/ssh/testdata"
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/testdata"
 )
 
 const sshd_config = `

ssh/test/testdata_test.go

@@ -12,8 +12,8 @@ import (
 	"crypto/rand"
 	"fmt"
 
-	"code.google.com/p/go.crypto/ssh"
-	"code.google.com/p/go.crypto/ssh/testdata"
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/testdata"
 )
 
 var (