(Reuters) -McDonald’s Corp on Sunday said Carl Icahn has nominated two members to its board of directors in an escalating fight over the treatment of pigs by the burger chain’s suppliers. The billionaire activist investor, who stated that he holds 200 shares in the company, nominated Leslie Samuelrich and Maisie Ganzler to stand for election at the 2022 annual meeting, the company said in a statement, adding that it would evaluate the nominees as it would any other board candidates. Icahn has previously said that it is “obscene” how the animals used for McDonald’s products are treated. Icahn h…