Ewan McGregor is ready to reprise a role he held a long time ago, in a galaxy far, far away. “Obi-Wan Kenobi” — the latest live-action “Star Wars” series — will be released on May 25 on the Disney+ streaming service, Disney announced. The limited series stars McGregor as the wise Jedi Obi-Wan, whom the actor portrayed in three “Star Wars” movies between 1999 and 2005. “The story begins 10 years after the dramatic events of ‘Star Wars: Revenge of the Sith’ where Obi-Wan Kenobi faced his greatest defeat—the downfall and corruption of his best friend and Jedi apprentice, Anakin Skywalker, who tur…