Billionaire Ajay Piramal’s conglomerate won bidding for bankrupt Indian shadow lender Dewan Housing Finance Corp., advancing a keenly watched insolvency that’s been a test of the country’s bankruptcy system. A resolution plan for Dewan from Piramal Enterprises Ltd.’s own shadow bank, Piramal Capital & Housing Finance Ltd., was approved by Dewan’s committee of creditors in a vote on Friday, according …