Apollo Global Management LLC and Ares Management LP are among private equity titans that scored a victory earlier this year when they persuaded Congress to let lending companies they control ramp up risk. Now, as lawmakers engage in frantic negotiations to avoid a government shutdown, the industry is back in Washington seeking more. At issue are business development companies, which provide loans to small and medium sized businesses and are part of a private lending boom that’s exploded since the 2008 financial crisis.