add IT test

Signed-off-by: guojialiang <[email protected]>

Author: guojialiang92

server/src/main/java/org/opensearch/index/IndexSettings.java

@@ -784,15 +784,15 @@ public static IndexMergePolicy fromString(String text) {
 
     public static final Setting<TimeValue> INDEX_PUBLISH_CHECKPOINT_INTERVAL_SETTING = Setting.timeSetting(
         "index.publish_checkpoint_interval",
-        TimeValue.timeValueMinutes(10),
+        TimeValue.timeValueSeconds(1),
         TimeValue.timeValueSeconds(1),
         Property.Dynamic,
         Property.IndexScope
     );
 
     public static final Setting<TimeValue> INDEX_LAG_TIME_BEFORE_RESEND_CHECKPOINT_SETTING = Setting.timeSetting(
         "index.lag_time_before_resend_checkpoint",
-        TimeValue.timeValueMinutes(10),
+        TimeValue.timeValueSeconds(1),
         TimeValue.timeValueSeconds(1),
         Property.Dynamic,
         Property.IndexScope