Reverse forcemerge and refresh order

Otherwise, opensearch does not clear old segment files

Signed-off-by: Heemin Kim <heemin@amazon.com>

Author: heemin32

src/main/java/org/opensearch/geospatial/ip2geo/common/GeoIpDataFacade.java

@@ -121,8 +121,8 @@ public void createIndexIfNotExists(final String indexName) {
     private void freezeIndex(final String indexName) {
         TimeValue timeout = clusterSettings.get(Ip2GeoSettings.TIMEOUT);
         StashedThreadContext.run(client, () -> {
-            client.admin().indices().prepareRefresh(indexName).execute().actionGet(timeout);
             client.admin().indices().prepareForceMerge(indexName).setMaxNumSegments(1).execute().actionGet(timeout);
+            client.admin().indices().prepareRefresh(indexName).execute().actionGet(timeout);
             client.admin()
                 .indices()
                 .prepareUpdateSettings(indexName)