By James Davey LONDON (Reuters) – From lightweight robots to hi-tech van routing systems, British online supermarket Ocado unveiled a suite of innovations on Wednesday it predicted would raise its returns and win new customers for its technology. Ocado has already struck deals to provide its technology to supermarket groups in eight countries, including Kroger in the United States, Aeon in Japan, Casino in France and Coles in Australia, driving its market value to 10.7 billion pounds ($14.5 billion). The latest innovations include a robot that is 80% lighter than its predecessor and described …