builder/amazon/ebs: pass config as a pointer so values could be populated by a run

builder/amazon/ebs/builder.go

@@ -112,7 +112,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 
 	// Setup the state bag and initial state for the steps
 	state := new(multistep.BasicStateBag)
-	state.Put("config", b.config)
+	state.Put("config", &b.config)
 	state.Put("ec2", ec2conn)
 	state.Put("awsSession", session)
 	state.Put("hook", hook)

builder/amazon/ebs/step_create_ami.go

@@ -17,7 +17,7 @@ type stepCreateAMI struct {
 }
 
 func (s *stepCreateAMI) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
-	config := state.Get("config").(Config)
+	config := state.Get("config").(*Config)
 	ec2conn := state.Get("ec2").(*ec2.EC2)
 	instance := state.Get("instance").(*ec2.Instance)
 	ui := state.Get("ui").(packer.Ui)

builder/amazon/ebsvolume/builder.go

@@ -111,7 +111,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 
 	// Setup the state bag and initial state for the steps
 	state := new(multistep.BasicStateBag)
-	state.Put("config", b.config)
+	state.Put("config", &b.config)
 	state.Put("ec2", ec2conn)
 	state.Put("hook", hook)
 	state.Put("ui", ui)