By Michelle Price (Reuters) - Fund managers are adding new warnings to China investment products in a bid to reduce their legal liability if regulators repeat the heavy-handed intervention in financial markets that rattled investors globally. Hedge funds, asset managers and ETF providers are scrambling to add the new disclosures to legal fund documents following watershed government actions in recent months that are now forcing managers to rethink China investment risk. The legal measures illustrate the degree to which China's market intervention is set to have a tangible long-term impact on investor confidence. Rather than shrugging off the actions of...