title: Manage Selenium Grid queue
body: <p>I have 1 grid hub server and 3 selenium nodes.
  I would like to execute multiple test suite against <strong>one</strong> Grid Hub server.
  So that each test suite will be executed on all 3 servers and the rest of the test suits (pending) will wait till the current test suite will finish its execution. </p>
  
  <p>Can the Grid Hub manage a queue of the test suits?
  If no, is there any workaround or another solution?</p>