By Rachel More BERLIN (Reuters) – Germany’s top four carmakers and parts supplier Bosch knowingly broke rules when developing a type of emissions software, an environmentalist group said on Thursday, in a years-long legal battle that could open the door for a new wave of lawsuits. Audi, Volkswagen, Daimler – now Mercedes-Benz – and BMW commissioned Bosch to develop technology which they knew from the beginning violated regulatory compliance, the Environmental Action Germany (DUH) said at a press conference, citing internal industry documents leaked to it this summer spanning 2006 to 2015. A sp…