Add printing of launch template id

builder/amazon/common/step_run_spot_instance.go

@@ -273,7 +273,7 @@ func (s *StepRunSpotInstance) Run(ctx context.Context, state multistep.StateBag)
 	}
 
 	// Tell EC2 to create the template
-	_, err = ec2conn.CreateLaunchTemplate(launchTemplate)
+	createLaunchTemplateOutput, err := ec2conn.CreateLaunchTemplate(launchTemplate)
 	if err != nil {
 		err := fmt.Errorf("Error creating launch template for spot instance: %s", err)
 		state.Put("error", err)
@@ -281,6 +281,9 @@ func (s *StepRunSpotInstance) Run(ctx context.Context, state multistep.StateBag)
 		return multistep.ActionHalt
 	}
 
+	launchTemplateId := createLaunchTemplateOutput.LaunchTemplate.LaunchTemplateId
+	ui.Message(fmt.Sprintf("Created Spot Fleet launch template: %s", *launchTemplateId))
+
 	// Add overrides for each user-provided instance type
 	var overrides []*ec2.FleetLaunchTemplateOverridesRequest
 	for _, instanceType := range s.SpotInstanceTypes {