(Repeats story to add byline, no change to text)By Essi LehtoHELSINKI, June 3 (Reuters) - Exxon Mobil's newly elected board member Kaisa Hietala says her work at Finnish refiner and biofuel producer Neste makes her more than just a champion of biofuels, she also has experience transforming a business.Tiny hedge fund Engine No. 1 led a shareholder revolt last week to unseat