read in the environment variables that government wait time and polling time for the AWS wait in step_stop_ebs_volume

builder/amazon/common/step_stop_ebs_instance.go

@@ -78,9 +78,11 @@ func (s *StepStopEBSBackedInstance) Run(ctx context.Context, state multistep.Sta
 
 	// Wait for the instance to actually stop
 	ui.Say("Waiting for the instance to stop...")
-	err = ec2conn.WaitUntilInstanceStoppedWithContext(ctx, &ec2.DescribeInstancesInput{
+	err = ec2conn.WaitUntilInstanceStoppedWithContext(ctx,
+		&ec2.DescribeInstancesInput{
 			InstanceIds: []*string{instance.InstanceId},
-	})
+		},
+		getWaiterOptions()...)
 
 	if err != nil {
 		err := fmt.Errorf("Error waiting for instance to stop: %s", err)