title: SonarToGerrit plugin, how to get use it for multi module project
body: <p>I have used the sonarToGerrit plugin for a while and now I looking into how I can improve the performance when the preview mode is removed. I'm testing at the moment with latest LTS version 7.9.2 of sonarqube togheter with the branch plugin. But the problem I have at the moment is the SonarToGerrit plugin, I found there is property called subJobConfigs, And in the example in below link I understand it as I should either configure subJobConfigs or baseConfig. But the plugin fails with the error, "No SonarQube report available. Please check your Project Settings" and then it tries to access the default report path "target/sonar/sonar-report.json"</p>
  
  <p><a href="https://plugins.jenkins.io/sonar-gerrit/" rel="nofollow noreferrer">https://plugins.jenkins.io/sonar-gerrit/</a></p>
  
  <p>Have anyone used property subJobConfigs and managed to get this working?</p>
  
  <p>/Martin</p>