title: SonarQube doesnt find Microsoft.CodeAnalysis 1.3.1.0 but it is installed
body: <p>I have tried to run a SonarQube scan on my C# projects. I have 3 projects and 1 solution file.</p>
  <p>I run:</p>
  <pre><code>SonarScanner.MSBuild.exe begin /o:&quot;xxxxxxxxx&quot; /k:&quot;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&quot;     
  /d:sonar.host.url=&quot;https://sonarcloud.io&quot; /d:sonar.login=&quot;xxxxxxxxxxxxxxxxxxxxxxxxxxx&quot;
  MSBuild.exe  Cake.Framework.sln /t:Rebuild
  SonarScanner.MSBuild.exe /d:sonar.login=&quot;xxxxxxxxxxxxxxxxxxxxxxx&quot; end
  </code></pre>
  <p>Then I see on my cmd:</p>
  <pre><code> SonarScanner for MSBuild 4.10
   Using the .NET Framework version of the Scanner for MSBuild
   Pre-processing started.
   Preparing working directories...
   Updating build integration targets...
   Fetching analysis configuration settings...
   Provisioning analyzer assemblies for cs...
   Installing required Roslyn analyzers...
   Provisioning analyzer assemblies for vbnet...
   Installing required Roslyn analyzers...
   Pre-processing succeeded.
  
   C:\Users\santi\Desktop\20200422_Cake.Framework-master&gt;MSBuild.exe  Cake.Framework.sln /t:Rebuild
   Microsoft (R) Build Engine, versión 14.0.23107.0
  </code></pre>
  <p>Everything seems fine but suddenly I got like 1000+ warnings like this one:</p>
  <pre><code> CSC : warning CS8032: Couldnt create an analyzer instance     
   SonarAnalyzer.Rules.CSharp.PartCreationPolicyShouldBeUsedWithExportAttribute from 
   C:\Users\santi\AppData\Local\Temp\.sonarqube\resources\0\SonarAnalyzer.CSharp.dll : Could not load 
   file or assembly 'Microsoft.CodeAnalysis, version= 1.3.1.0, Culture=neutral,  
   PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file 
   specified. [C:\Users\santi\Desktop\20200422_Cake.Framework-master\Cake.Framework\Cake.Framework.csproj]
  </code></pre>
  <p>I already have installed the Microsoft.CodeAnalysis v 1.3.1 on all my 3 projects using the NuGet Manager.</p>
  <p>What I'm missing?</p>
  <p>I'm using .NET Framework 4.8, MSBuild 14.0, Visual Studio 2019</p>