title: API + restart the services that restart is required
body: <p>after adding new parameter and value to the ambari cluster , we need to restart the service to take affect </p>
  
  <p>from ambari GUI restart the service is required , and we can see that because restart button is colored with orange</p>
  
  <p>so my question is</p>
  
  <p>we need API command that restart only the services that restart is required?</p>