Carlyle Group Inc. has agreed to sell Dutch technology services company HSO to Bain Capital, marking its exit from the investment after six years.Bain Capital will invest alongside HSO founder and Chief Executive Officer Peter J. ter Maaten, who will remain a significant shareholder and board member, according to a statement on Wednesday that confirmed an earlier Bloomberg News report. The deal values HSO at about $1 billion, people familiar with the matter have said....