NEW YORK (Reuters) – With frontman David Lee Roth back on board, American rock group Van Halen released Monday their first single and video with the flamboyant frontman in 27 years. The black and white video for the new song, “Tattoo,” from the band’s upcoming album, “A Different Kind of Truth,” shows Roth and the Van Halen brothers, Eddie and Alex, performing on stage complete with a trademark guitar solo, and Roth, now 57, singing and dancing. …