“BRETT’S VEGAS VIEW” by Jackie Brett ROCKER MARK BOALS JOINS NEW TROP’S ‘RAIDING THE ROCK VAULT’: Rock singer Mark Boals has joined the permanent lineup of “Raiding the Rock Vault” at the New Tropicana. The powerhouse vocalist and bass player, best known for his work with Dokken, Ted Nugent, and Yngwie Malmsteen, takes the stage Friday-Wednesday at 9 p.m. …