title: Upgrade SonarQube from version 5.6.4 to 6.7.2
body: <p>I want to upgrade SonarQube and I haven't done this before so I have few question. Please could you help me with them?</p>
  
  <ol>
  <li>How can I find which edition is installed on my server?</li>
  <li>How can I find if the installed version is licensed or not?</li>
  <li>How can I upgrade from 5.6.4 to  6.7 LTS? Do you have upgrade guide for the same?</li>
  </ol>