TWO HOUSEHOLD NAMES REPRISE TV roles this week. On Friday, NBC has MacShayne: Final Roll of the Dice (April 29, 9 p.m. ET). Kenny Rogers returns as the rakish troubleshooter at a Vegas hotel-casino. This time he's dealt a Latin spitfire singer (Maria Conchita Alonso) accused of murder. On Monday (May 2,9 p.m. ET), ABC's Columbo: Undercover is a nifty puzzle based on an Ed McBain story. Peter Falk chucks the raincoat for a series of bad disguises, which fool no one. Columbo's superior officer, by the way, is portrayed by Hank Garrett, who has been playing cops on TV since 1961 when he was officer Ed Nicholson on Car 54, Where Are You?