title: How to set default value for label expression in Jenkins project configure page
body: <p>currently I got a request that I need to block all build jobs in Jenkins master, every jobs must be built in slaves.</p>
  
  <p>So I would like to configure every new job in Jenkins will be default checked in "Restricted where this project can run", and then a default value for Label Expression, e.g. "docker-slave". So that everytime dev create a new job, they don't have to choose which jenkins slave will be used (actually they don't want to do it).</p>
  
  <p><a href="https://i.stack.imgur.com/D17Pp.jpg" rel="nofollow noreferrer">I would like this to be default for every new job &lt;-</a></p>
  
  <p>Any help would be appreciated. Thanks a lot.</p>