CDK Global Inc., the software provider to roughly 15,000 car dealerships across North America that was crippled by a hack nearly two weeks ago, said “substantially all” of the dealers it serves have seen their management systems come back online.“We are ahead of the anticipated schedule,” Tony Macrito, senior communications director at CDK, said by email. The company had said Monday that it expected all dealers to be live by late July 3 or early July 4....