title: Code coverage results not getting updated with Branching in sonarqube
body: <p>I am working on integrating sonarqube in Jenkins pipeline. I have enabled code coverage on sonarqube with opencover using sonar-csharp as per the documentation below
  <a href="https://docs.sonarqube.org/pages/viewpage.action?pageId=6389770" rel="nofollow noreferrer">https://docs.sonarqube.org/pages/viewpage.action?pageId=6389770</a>
  I am also using the branch plugin.
  When i start the sonarqube analysis command with /d:sonar.branch.name and  /d:sonar.branch.target , the coverage results on the master branch stays at 0% and the coverage results on the specific branch remains blank. When i remove the /d:sonar.branch.name and  /d:sonar.branch.target, the coverage results on the master gets updated to a specific value, but the coverage results on the specific branch in the code tab is still blank. Shouldn't the code coverage percentages be updated accordingly in the specific branch and why do i see this difference in behaviour with the use of branch plugin. Please let me know if i am missing something. Below are the versions of the tools i am using</p>
  
  <p>SonarQube Server 6.7.2
  Sonar-C# 6.8.2.4717
  Opencover - 4.6.519</p>
  
  <p>I have tested the behavior with both opencover and visual studio coverage.
  I have tried to check if there are any errors by enabling the verbose logging during the sonarqube analysis and i do see that the coverage report is imported and analyzed by sonarqube, but the results are not displayed in the web page. Below is what i see in both successful and failure scenarios</p>
  
  <p>INFO: Sensor C# Tests Coverage Report Import [csharp]
   INFO: Parsing the OpenCover report C:\agent\workspace\xxxx\xxxx\opencovertests.xml
   INFO: Adding this code coverage report to the cache for later reuse: C:\agent\workspace\xxxxx\xxxx\opencovertests.xml
   INFO: Sensor C# Tests Coverage Report Import [csharp] (done) | time=183ms
   INFO: Sensor Zero Coverage Sensor
   INFO: Sensor Zero Coverage Sensor (done) | time=95ms
   Analysis report generated in C:\agent\workspace\xxxx\xxxx.sonarqube\out.sonar\scanner-report
  Analysis report uploaded in 873ms
  INFO: ANALYSIS SUCCESSFUL</p>
  
  <p><a href="https://i.stack.imgur.com/BgP2U.png" rel="nofollow noreferrer">Blank Coverage</a></p>
  
  <p>Regards,
  Chiranth</p>