move multistep imports to helper.

gomvpkg -from "github.com/mitchellh/multistep" -to "github.com/hashicorp/packer/helper/multistep"

builder/alicloud/ecs/builder.go

@@ -10,9 +10,9 @@ import (
 	"github.com/hashicorp/packer/common"
 	"github.com/hashicorp/packer/helper/communicator"
 	"github.com/hashicorp/packer/helper/config"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
 	"github.com/hashicorp/packer/template/interpolate"
-	"github.com/mitchellh/multistep"
 )
 
 // The unique ID for this builder

builder/alicloud/ecs/packer_helper.go

@@ -3,8 +3,8 @@ package ecs
 import (
 	"fmt"
 
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 func message(state multistep.StateBag, module string) {

builder/alicloud/ecs/ssh_helper.go

@@ -7,7 +7,7 @@ import (
 	"time"
 
 	packerssh "github.com/hashicorp/packer/communicator/ssh"
-	"github.com/mitchellh/multistep"
+	"github.com/hashicorp/packer/helper/multistep"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/crypto/ssh/agent"
 )

builder/alicloud/ecs/step_attach_keypair.go

@@ -7,8 +7,9 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
+	"time"
 )
 
 type stepAttachKeyPar struct {

builder/alicloud/ecs/step_check_source_image.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepCheckAlicloudSourceImage struct {

builder/alicloud/ecs/step_config_eip.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type setpConfigAlicloudEIP struct {

builder/alicloud/ecs/step_config_key_pair.go

@@ -8,8 +8,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type StepConfigAlicloudKeyPair struct {

builder/alicloud/ecs/step_config_public_ip.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepConfigAlicloudPublicIP struct {

builder/alicloud/ecs/step_config_security_group.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepConfigAlicloudSecurityGroup struct {

builder/alicloud/ecs/step_config_vpc.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepConfigAlicloudVPC struct {

builder/alicloud/ecs/step_config_vswitch.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepConfigAlicloudVSwitch struct {

builder/alicloud/ecs/step_create_image.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepCreateAlicloudImage struct {

builder/alicloud/ecs/step_create_instance.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepCreateAlicloudInstance struct {

builder/alicloud/ecs/step_delete_images_snapshots.go

@@ -6,8 +6,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepDeleteAlicloudImageSnapshots struct {

builder/alicloud/ecs/step_mount_disk.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepMountAlicloudDisk struct {

builder/alicloud/ecs/step_pre_validate.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepPreValidate struct {

builder/alicloud/ecs/step_region_copy_image.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type setpRegionCopyAlicloudImage struct {

builder/alicloud/ecs/step_run_instance.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepRunAlicloudInstance struct {

builder/alicloud/ecs/step_share_image.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type setpShareAlicloudImage struct {

builder/alicloud/ecs/step_stop_instance.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 
 	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
-	"github.com/mitchellh/multistep"
 )
 
 type stepStopAlicloudInstance struct {