WASHINGTON — The man accused of attacking Paul Pelosi, the husband of House Speaker Nancy Pelosi, told police he wanted to hold the House Speaker hostage and “break her kneecaps,” authorities said Monday.David DePape, 42, confronted a sleeping Paul Pelosi in the couple’s San Francisco bedroom early Friday morning, according to a federal affidavit filed in court Monday.Federal prosecutors have filed two charges against DePape, days after police say he broke into the Pelosi’s home and struck the …