v4场景码长度改为11位

4dkankan-common-utils/src/main/java/com/fdkankan/common/util/RandomUtil.java

@@ -15,7 +15,7 @@ public class RandomUtil {
         StringBuffer shortBuffer = new StringBuffer();
         String uuid = UUID.randomUUID().toString().replace("-", "");
         int index = 0;
-        for (int i = 0; i < 10; i++) {
+        for (int i = 0; i < 11; i++) {
             index = i;
             if(index >= 8){
                 index = i % 8;