By Francesco Canepa and Gavin Jones FRANKFURT/ROME (Reuters) – Ten years after Mario Draghi’s “whatever it takes” pledge saved the euro, Italy is once again in the middle of a debt crisis – but the country’s prime minister and former head of the European Central Bank may struggle to solve this one. Just like a decade ago, investors are questioning whether some euro zone countries can continue to roll over their public debts, which have ballooned during the pandemic and are becoming more expensive to refinance as the ECB prepares to raise interest rates. This time, however, the epicentre of the…