title: Sonar Cobertura Plugin not finding coverage.xml file
body: <p>I have a multi-module maven project in <code>Jenkins</code> 1.545.I am using <code>Sonarqube</code> version 4.2.I have installed <code>cobertura</code> plugin version 1.6.1 and <code>java</code> plugin version 2.2.1 in <code>Sonarqube</code>.I have successfully generated <code>coverage.xml</code> file at location- <code>/target/site/cobertura/coverage.xml</code> for each module using maven command- <code>"cobertura:cobertura -Dcobertura.report.format=xml"</code>
  For sonar,i have set the maven build option as <code>sonar:sonar</code> with properties as below:</p>
  
  <pre><code>sonar.dynamicAnalysis=reuseReports
  sonar.junit.reportsPath=target/site
  sonar.java.coveragePlugin=cobertura
  sonar.cobertura.reportPath=/target/site/cobertura/coverage.xml
  </code></pre>
  
  <p>I can see <code>coverage.xml</code> file when I browse the workspace of my project in <code>Jenkins</code> but the plugin keeps saying that it can't find it.I get the following message in console output of jenkins-</p>
  
  <pre><code>Execute Findbugs 2.0.3 done: 48446 ms
  Sensor FindbugsSensor done: 48800 ms
  Sensor CoberturaSensor...
  Cobertura report not found at /target/site/cobertura/coverage.xml
  Sensor CoberturaSensor done: 4 ms
  Sensor CpdSensor...
  </code></pre>
  
  <p>Any help is appreciated.Thanks in advance.</p>