If Mark Wahlberg and Dwayne “The Rock” Johnson are not enough reason to draw you into the movie theater to see “Pain & Gain” — the top-grossing movie in America last weekend — how about the fact that several Coasties make cameos in the movie? As the good guys, of course. Coasties with a law enforcement detachment from Tactical Law Enforcement Team South, out of Opa-locka, Fla., had a chance to be extras in the movie and meet Marky Mark. On screen, the Coasties were the guys escorting Wahlberg from a helicopter to turn him over to Miami authorities, said…