It’s a new chapter in the life of disgraced former top cop Bernard Kerik, who began his house arrest yesterday by sending his driver out to the garage of his Franklin Lakes, NJ, mansion to fetch five copies of his autobiography, “The Lost Son.” The memoir — which reveals his mother was an alcoholic and a prostitute who was murdered when he was 9 — might need some revisions after Kerik pleaded guilty to lying to the feds about apartment renovations from a mob-linked contractor. At his sentencing Feb. 18, Kerik is expected to get up to 33 months in prison.