Update examples with latest language features

Author: Chris Martinez

samples/aspnetcore/ConventionsSample/Startup.cs

@@ -30,13 +30,14 @@ public void ConfigureServices( IServiceCollection services )
                     // reporting api versions will return the headers "api-supported-versions" and "api-deprecated-versions"
                     options.ReportApiVersions = true;
 
-                    // apply api versions using conventions rather than attributes
                     options.Conventions.Controller<ValuesController>().HasApiVersion( 1, 0 );
+
                     options.Conventions.Controller<Values2Controller>()
                                        .HasApiVersion( 2, 0 )
                                        .HasApiVersion( 3, 0 )
-                                       .Action( c => c.GetV3( default( ApiVersion ) ) ).MapToApiVersion( 3, 0 )
-                                       .Action( c => c.GetV3( default( int ), default( ApiVersion ) ) ).MapToApiVersion( 3, 0 );
+                                       .Action( c => c.GetV3( default ) ).MapToApiVersion( 3, 0 )
+                                       .Action( c => c.GetV3( default, default ) ).MapToApiVersion( 3, 0 );
+
                     options.Conventions.Controller<HelloWorldController>()
                                        .HasApiVersion( 1, 0 )
                                        .HasApiVersion( 2, 0 )

samples/aspnetcore/SwaggerODataSample/Startup.cs

@@ -44,10 +44,10 @@ public void ConfigureServices( IServiceCollection services )
 
                     // configure query options (which cannot otherwise be configured by OData conventions)
                     options.QueryOptions.Controller<V2.PeopleController>()
-                                        .Action( c => c.Get( default( ODataQueryOptions<Person> ) ) ).Allow( Skip | Count ).AllowTop( 100 );
+                                        .Action( c => c.Get( default ) ).Allow( Skip | Count ).AllowTop( 100 );
 
                     options.QueryOptions.Controller<V3.PeopleController>()
-                                        .Action( c => c.Get( default( ODataQueryOptions<Person> ) ) ).Allow( Skip | Count ).AllowTop( 100 );
+                                        .Action( c => c.Get( default ) ).Allow( Skip | Count ).AllowTop( 100 );
                 } );
             services.AddSwaggerGen(
                 options =>