MILAN/LONDON (Reuters) -Italy’s Campari said on Thursday it had agreed to buy historic French cognac house Courvoisier from Beam Suntory for $1.2 billion, marking a big push into brandy and the largest deal on record for the acquisition-hungry group. Campari, which wants a large portion of its growth to be powered by acquisitions as it looks to become a more serious contender to spirits giants Diageo and Pernod Ricard, said cognac would now become the fourth major part of the group, alongside aperitifs, bourbon and tequila. It previously owned only one smaller cognac brand, Bisquit, according …