## Why you need it? <!-- Is your feature request related to a problem? Please describe in details --> We want to update runtime spec by container update api. ## How it could be? <!--A clear and concise description of what you want to happen. For a computer fan, you can explain more about input of the feature, and output of it.--> Add a field of specAnnotation in UpdateConfig, and transfer it to runc. ## Other related information <!-- Add any other context or screenshots about the feature request here.-->