Former Destiny’s Child member LeToya Luckett has joined the cast of Karin Gist and Lee Daniels’ upcoming Fox drama “Our Kind of People,” the network announced Thursday.Luckett joins the show in a series regular role, set to star opposite “Chicago Med” alum Yaya DaCosta and Morris Chestnut.Inspired by Lawrence Otis Graham’s book, “Our Kind of People: Inside America’s Black Upper Class,” the series follows strong-willed, single mom Angela Vaughn (DaCosta) as she sets out to reclaim her family’s