John Lee, 64, is expected to be anointed the Hong Kong's next chief executive by a committee of Beijing loyalists in May – Copyright POOL/AFP/File Lam Yik A former top cop set to become Hong Kong’s new leader vowed to reboot the city’s international competitiveness on Saturday, but revealed few concrete policy details on how that will be achieved. John Lee, 64, is expected to be anointed the business hub’s next chief executive by a committee of Beijing loyalists next month. A hardline former security chief, he is currently the only person to have announced a leadership bid in what…