add version sample

xxl-job-executor-samples/xxl-job-executor-sample-springboot/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java

@@ -37,7 +37,8 @@ public class SampleXxlJob {
     @XxlJob("demoJobHandler")
     public void demoJobHandler() throws Exception {
         XxlJobHelper.log("XXL-JOB, Hello World.");
-
+        //可以结合调用链传播
+        XxlJobHelper.log("分支号={}",XxlJobHelper.getVersion());
         for (int i = 0; i < 5; i++) {
             XxlJobHelper.log("beat at:" + i);
             TimeUnit.SECONDS.sleep(2);