Change default values for WxPayConfig settings

Author: buaazyl

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java

@@ -272,12 +272,12 @@ public class WxPayConfig {
   /**
    * 是否将全部v3接口的请求都添加Wechatpay-Serial请求头，默认添加
    */
-  private boolean strictlyNeedWechatPaySerial = false;
+  private boolean strictlyNeedWechatPaySerial = true;
 
   /**
    * 是否完全使用公钥模式(用以微信从平台证书到公钥的灰度切换)，默认使用
    */
-  private boolean fullPublicKeyModel = false;
+  private boolean fullPublicKeyModel = true;
 
   /**
    * 返回所设置的微信支付接口请求地址域名.