While speaking at the NFL League Meetings, Joe Brady admitted he was looking for players with an edge to help transform the identity of the Buffalo Bills’ defense. One of the names expected to skyrocket that transition is new safety C.J. Gardner-Johnson, who has exhibited a fierce nature throughout his seven-year career. The 28-year-old is a hard-hitting, high-flying, trash-talking son of a gun, which is something the Bills’ defense hasn’t had much of in recent seasons under previous leadership. At the very least, Gardner-Johnson should shake things up , says NFL analyst Jeffri Chadiha. “He is a big personality, and it’s hard for some teams to handle that in the locker room,” said Chadiha on  One Bills Live .  “It’s why he moves around so much. But he does bring an edge.” Gardner-Johnson has played for five teams over the past six seasons, but he hopes he has found a home in Buffalo. ‘Difference maker’ Chicago Bears safety C.J.…