Google announced on Google+ that they are adding a new feature to Google AdWords that will enable you to choose which specific conversions to include in bid automation.
Google AdWords automated bidding allows you to put your bidding on autopilot with the goal of getting the most possible clicks within your budget. It works based on various metrics pulled from your data and will auto-adjust your CPCs and other parameters based on those metrics. You can learn more about itover here.
Google AdWords To Enable Conversion Selection For Bid Automations