Steven J. Horowitz Senior Music Writer After canceling seven dates of her first North American tour in five years amid weak ticket sales, Jennifer Lopez has renamed it to apparently broaden its scope, changing it from “This Is Me… Now” to “This Is Me… Live | The Greatest Hits.” Lopez initially announced the trek in February to coincide with the release of her latest album “This Is Me… Now” and its accompanying two films. But she quietly canceled some of its dates last month in cities like Cleveland and Nashville, likely due to poor sales.