builder/amazon/all: address feedback for ami tag refactoring change

Use explicit name for Tag field and note tags added in the ui.

builder/amazon/common/step_create_tags.go

@@ -22,6 +22,7 @@ func (s *StepCreateTags) Run(state map[string]interface{}) multistep.StepAction
 
 		var ec2Tags []ec2.Tag
 		for key, value := range s.Tags {
+			ui.Message(fmt.Sprintf("Adding tag: \"%s\": \"%s\"", key, value))
 			ec2Tags = append(ec2Tags, ec2.Tag{key, value})
 		}
 

builder/amazon/ebs/builder.go

@@ -111,7 +111,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		&common.StepProvision{},
 		&stepStopInstance{},
 		&stepCreateAMI{},
-		&awscommon.StepCreateTags{b.config.Tags},
+		&awscommon.StepCreateTags{Tags: b.config.Tags},
 	}
 
 	// Run!

builder/amazon/instance/builder.go

@@ -177,7 +177,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		&StepBundleVolume{},
 		&StepUploadBundle{},
 		&StepRegisterAMI{},
-		&awscommon.StepCreateTags{b.config.Tags},
+		&awscommon.StepCreateTags{Tags: b.config.Tags},
 	}
 
 	// Run!