G’day Australia, hello Oahu. That’s what David Hasselhoff and the rest of the cast of “Baywatch” are expected to say when an official announcement is made tomorrow that the show will be relocating to Hawaii for the upcoming season. Residents of Avalon, Australia, where the show, now in its 11th season, had hoped to film (in an attempt to re-energize its formula), opposed having the cast and crew upset the area’s idyllic setting. (Nevertheless, several episodes were filmed there.) “Baywatch” is expected to utilize some other Hawaiian locations besides Oahu.