GANDHINAGAR, India, July 17 (Reuters) - Debt restructuring talks made little progress during the third finance meeting of the G20 countries in India as the bloc was unable to overcome key differences and low attendance due to domestic issues adding to the roadblocks. The finance ministers of the G20 countries gathered in the western Indian state of Gujarat, hoping to push for agreements on debt restructuring for vulnerable countries, global minimum taxation and reforms on multilateral development banks. "We are not making much headway with the debt restructuring issue," a senior official, who is part of the meeting, told Reuters...