Fix CLS Compliance error in System.Composition test library

dotnet/roslyn#4293 CLS Compliance warning CS3016 is reported on non-public members

Author: dsplaisted

src/System.Composition/perftests/WebBenchmarks.cs

@@ -65,7 +65,9 @@ internal class LightweightWebBenchmark : WebBenchmark
         [Export]
         private class WebServer
         {
+#pragma warning disable 3016
             [Import, SharingBoundary(Web.Boundaries.Web)]
+#pragma warning restore 3016
             public ExportFactory<Web.OperationRoot> WebScopeFactory { get; set; }
         }
 

src/System.Composition/scenarios/TestLibrary/TestClass.cs

@@ -11,6 +11,7 @@
 namespace TestLibrary
 {
     [Export]
+    [CLSCompliant(false)]
     public class ClassWithDependecy
     {
         public TestDependency _dep;
@@ -22,6 +23,7 @@ public ClassWithDependecy(TestDependency dep)
     }
 
     [Export]
+    [CLSCompliant(false)]
     public class ClassWithDependecyAndSameBaseType
     {
         public IDependency _dep;