title: Pentaho reporting connectionFactory has new method added but no description
body: <p>I am in process of upgrading my pentaho reporting from 3.6.1 to 3.8.0 in my web application. when I updated all necessary jar files, I got one compilation error in one of my class which implements <code>ConnectionProvider</code>. following is my class.</p>
  
  <pre><code>public class DataSourceConnectionProvider implements ConnectionProvider
  {
  
  ....
  
  }
  </code></pre>
  
  <p>The error is saying that my class should implement <code>getConnectionHash()</code> method as it is defined in <code>ConnectionProvider</code> interface. but It was not there in 3.6.1 version. so I am bit confused why they have added it and how to implement it in my class. </p>