UPDATE 1-Help wanted: Staff shortages under Trump slow policy changes

(Adds NHTSA statement in paragraph 18) By David Shepardson WASHINGTON, Oct 6 (Reuters) - Hundreds of government employees file in and out of the U.S. agency for auto safety in Washington every working day, investigating potentially dangerous vehicles and managing a $900 million annual budget. But an administrator is not among them - nobody has been nominated to the top job since President Donald Trump took office. Also missing from the roughly 550 people on the payroll of the N