AppVeyor: Run build-with-wrc.bat

For now, we want to build WRC, business as usual.
If we find that WRC keeps adding pain even with separate code and scripts,
we can further consider removing it from continuous integration.

Author: angularsen

appveyor.yml

@@ -20,7 +20,7 @@ build_script:
     # Build, test, pack and push nugets
     #####################################
 
-    .\\build.bat
+    .\\build-with-wrc.bat
     $BuildExitCode = $LASTEXITCODE
 
     #####################################