title: AzureDevops- .Net project analysis with sonarQube error
body: <p>I have setup my Sonar server on my AKS (Azure Kubernetes cluster) and using Sonar docker image version (image: sonarqube:7.1).</p>
  <p>I have my CI/CD pipeline in Azure Devops for .net application and I am using AzureDevops SonarScanner ( sonar) .</p>
  <p>When I am running my pipeline I am getting this error:</p>
  <pre><code>Description : Run scanner and upload the results to the SonarQube server.
  Version : 4.11.0
  Author : sonarsource
  Help : Version: 4.11.0. This task is not needed for Maven and Gradle projects since the scanner should be run as part of the build.
  /usr/bin/dotnet /home/vsts/work/_tasks/SonarQubePrepare_15b84ca1-b62f-4a2a-a403-89b77a063157/4.11.0/dotnet-sonar-scanner-msbuild/SonarScanner.MSBuild.dll end
  SonarScanner for MSBuild 4.10
  Using the .NET Core version of the Scanner for MSBuild
  Post-processing started.
  ##[error]The SonarQube MSBuild integration failed: SonarQube was unable to collect the required information about your projects.
  Possible causes:
  
  The project has not been built - the project must be built in between the begin and end steps
  An unsupported version of MSBuild has been used to build the project. Currently MSBuild 14.0.25420.1 and higher are supported.
  The begin, build and end steps have not all been launched from the same folder
  None of the analyzed projects have a valid ProjectGuid and you have not used a solution (.sln)
  The SonarQube MSBuild integration failed: SonarQube was unable to collect the required information about your projects.
  </code></pre>
  <p>My Pipeline looks like this :</p>
  <pre><code>- task: SonarQubePrepare@4
    inputs:
      SonarQube: 'SonarQube-Dev'
      scannerMode: 'MSBuild'
      projectKey: 'Test'
      projectName: 'Test'
      extraProperties: |
        # Additional properties that will be passed to the scanner, 
        # Put one key=value per line, example:
        # sonar.exclusions=**/*.bin
        sonar.projectBaseDir=/src
        sonar.sources=src  
  
    
  - task: MSBuild@1
    inputs:
      solution: '/*.sln'
      restoreNugetPackages: true
      clean: true   
      
  - task: SonarQubeAnalyze@4
  </code></pre>