title: ef core db context scaffold exclude keyless entities
body: <p>Is there any way I can exclude keyless entities from scaffolding? I have a ton of tables without a primary key. I need ef to scaffold only the tables with a primary key. If this is not supported, any way to hook this in the IDesignTimeService (like we do for pluralize/singularize entities and dbsets)/something similar. Basically I am trying to write a script that does some operations based on scaffolding. So zero manual intervention is the goal. Any help would be appreciated. Thanks in advance!</p>