Projects in src can not use analyzer by setting UseMLCodeAnalyzer project property to false.

Author: TomFinley

src/Directory.Build.props

@@ -15,11 +15,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="$(MSBuildThisFileDirectory)\..\tools-local\Microsoft.ML.CodeAnalyzer\Microsoft.ML.CodeAnalyzer.csproj">
+    <ProjectReference
+      Condition="'$(UseMLCodeAnalyzer)' != 'false'"
+      Include="$(MSBuildThisFileDirectory)\..\tools-local\Microsoft.ML.CodeAnalyzer\Microsoft.ML.CodeAnalyzer.csproj">
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
       <OutputItemType>Analyzer</OutputItemType>
     </ProjectReference>
-    
+
   </ItemGroup>
 
 </Project>