Properly initialize AsyncHttpClientConfigBean.ioThreadMultiplier

Author: Stephane Landelle

api/src/main/java/org/asynchttpclient/AsyncHttpClientConfigBean.java

@@ -54,7 +54,8 @@ void configureDefaults() {
         maxDefaultRedirects = Integer.getInteger(ASYNC_CLIENT + "defaultMaxRedirects", 5);
         compressionEnabled = Boolean.getBoolean(ASYNC_CLIENT + "compressionEnabled");
         userAgent = System.getProperty(ASYNC_CLIENT + "userAgent", "AsyncHttpClient/" + AHC_VERSION);
-
+        ioThreadMultiplier = Integer.getInteger(ASYNC_CLIENT + "ioThreadMultiplier", 8);
+        
         boolean useProxySelector = Boolean.getBoolean(ASYNC_CLIENT + "useProxySelector");
         boolean useProxyProperties = Boolean.getBoolean(ASYNC_CLIENT + "useProxyProperties");
         if (useProxySelector) {