Westlife's Mark Feehily is sharing a positive health update ahead of the band's first ever tour of North America. ET Canada's Carlos Bustamante caught up with Feehily alongside his bandmates, Shane Filan, Nicky Byrne and Kian Egan, for an exclusive chat about their sold out Toronto shows. [readmore label="READ MORE: " link="https://etcanada.com/news/373658/westlife-irish-boy-band-reuniting-with-new-music-and-tour/" /] "I'm feeling…