By Sarah Morland MEXICO CITY (Reuters) -The Mexican government said on Friday it had suffered a major cyber hack of data held by the armed forces, including details about President Andres Manuel Lopez Obrador’s heart condition that led to his hospitalization in January. The president, speaking at a regular news conference, said information published in local media overnight from the hack of the Defense Ministry was genuine, and he confirmed revelations about his own health problems. “It’s true, there was a cyber hack,” he said, saying that hackers had exploited a change in the military’s IT sy…