title: Running updated quality profile against existing projects in sonar qube
body: <p>I currently have a SonarQube instance setup with multiple projects. Currently I get multiple requests every few weeks to update the quality profile to include a new rule or to remove an old one. This is usually followed by me having to recreate the projects and then sequentially running analysis again so that I can have the differential view again starting from a baseline code. This is becoming a pain as the number of projects grow. Is there any alternative to this? For instance is there any way to tell Sonar to pick up the new rules from the quality profile and run the existing analysis again against these rules. </p>
  
  <p>If I don't do that I get a spike in issues as new rules get added and a new analysis is run as the existing analysis wasn't run against those rules and doesn't have an accurate issue number. </p>
  
  <p>Thanks for the help!</p>