8211731: Reconsider default option for ClassPathURLCheck change done in JDK-8195874

Reviewed-by: alanb, mchung

src/share/classes/sun/misc/URLClassPath.java

@@ -90,7 +90,7 @@ public class URLClassPath {
 
         // This property will be removed in a later release
         p = AccessController.doPrivileged(
-            new GetPropertyAction("jdk.net.URLClassPath.disableClassPathURLCheck"));
+            new GetPropertyAction("jdk.net.URLClassPath.disableClassPathURLCheck", "true"));
 
         DISABLE_CP_URL_CHECK = p != null ? p.equals("true") || p.isEmpty() : false;
         DEBUG_CP_URL_CHECK = "debug".equals(p);