title: Jenkins role based strategy is not reflecting
body: <p>I would like to manage my users in Jenkins with admin.I m planning to do it by Role based strategy in configure global setting option. But i cant see the option even Cloudbees Role Based Access Control Plugin is installed in my plugin list. 
  Any suggestions?  </p>
  
  <p>Note: As I am in a env where no internet access,  it is very difficult to re install the plugin and try again. </p>
  
  <p>Thanks 
  Jeevan</p>