title: Jenkins-Sonar-Maven Integration Issue
body: <p>I have been trying to integrate Sonar with our Jenkins continous Integration system. I have installed the Sonar-plugin for Jenkins and configured it(specified the DB, DB Username and password etc). I have also specified the sonar-maven-plugin version as 1.0-beta-2.</p>
  
  <p>Along with this plugin configuration, I have added a build post-action to run Sonar on my maven projects. But everytime Jenkins tries to execute sonar:sonar goal it fails with the below error.</p>
  
  <p>Please help me guys in resolving this problem.</p>
  
  <p>Thanks</p>
  
  <pre><code>[INFO] Building prof
  [INFO]    task-segment: [org.codehaus.mojo:sonar-maven-plugin:1.0-beta-2:sonar] (aggregator-style)
  [INFO] ------------------------------------------------------------------------
  [INFO] [sonar:sonar {execution: default-cli}]
  [INFO] Sonar host: http://inmqbs:9000
  [INFO] Sonar version: 3.3.2
  [INFO] Execute: org.codehaus.sonar:sonar-maven-plugin:3.3.2:sonar
  Downloading: http://troop:8081/nexus/content/groups/platform//org/codehaus/sonar/sonar-maven-   plugin/3.3.2/sonar-maven-plugin-3.3.2.pom
  [INFO] Unable to find resource 'org.codehaus.sonar:sonar-maven-plugin:pom:3.3.2' in repository troop-maven-releases (http://troop:8081/nexus/content/groups/platform/)
  Downloading: http://troop:8081/nexus/content/groups/platform//org/codehaus/sonar/sonar-maven-plugin/3.3.2/sonar-maven-plugin-3.3.2.pom
  [INFO] Unable to find resource 'org.codehaus.sonar:sonar-maven-plugin:pom:3.3.2' in repository  central (http://repo1.maven.org/maven2)
  Downloading: http://troop:8081/nexus/content/groups/platform//org/codehaus/sonar/sonar-maven-plugin/3.3.2/sonar-maven-plugin-3.3.2.pom
  [INFO] Unable to find resource 'org.codehaus.sonar:sonar-maven-plugin:pom:3.3.2' in repository troop-maven-releases (http://troop:8081/nexus/content/groups/platform/)
  Downloading: http://troop:8081/nexus/content/groups/platform//org/codehaus/sonar/sonar-maven-plugin/3.3.2/sonar-maven-plugin-3.3.2.pom
  [INFO] Unable to find resource 'org.codehaus.sonar:sonar-maven-plugin:pom:3.3.2' in repository central (http://repo1.maven.org/maven2)
  [INFO] ------------------------------------------------------------------------
  [ERROR] BUILD ERROR
  [INFO] ------------------------------------------------------------------------
  [INFO] Can not execute Sonar
  
  Embedded error: Unable to build project for plugin 'org.codehaus.sonar:sonar-maven-plugin':  POM 'org.codehaus.sonar:sonar-maven-plugin' not found in repository: Unable to download the artifact from any repository
  
    org.codehaus.sonar:sonar-maven-plugin:pom:3.3.2
  
    from the specified remote repositories:
    internal-repository (http://troop:8081/nexus/content/groups/platform/)
  
    for project org.codehaus.sonar:sonar-maven-plugin
  [INFO] ------------------------------------------------------------------------
  [INFO] Trace
  org.apache.maven.lifecycle.LifecycleExecutionException: Can not execute Sonar
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals  (DefaultLifecycleExecutor.java:719)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal (DefaultLifecycleExecutor.java:569)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal (DefaultLifecycleExecutor.java:539)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:284)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
  at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
  at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
  at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
  at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
  at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
  at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
  at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
  Caused by: org.apache.maven.plugin.MojoExecutionException: Can not execute Sonar
  at org.codehaus.mojo.sonar.Bootstraper.executeMojo(Bootstraper.java:103)
  at org.codehaus.mojo.sonar.Bootstraper.start(Bootstraper.java:79)
  at org.codehaus.mojo.sonar.SonarMojo.execute(SonarMojo.java:88)
  at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals (DefaultLifecycleExecutor.java:694)
  ... 17 more
  </code></pre>