[BUG] org.opensearch.search.asynchronous.integTests.AsynchronousSearchStatsIT.testNodewiseStats is flakey

[dblock]

Describe the bug

https://github.com/opensearch-project/asynchronous-search/runs/5514037443?check_suite_focus=true

2022-03-11T16:45:31.7781982Z org.opensearch.search.asynchronous.integTests.AsynchronousSearchStatsIT > testNodewiseStats FAILED
2022-03-11T16:45:31.7793454Z 
2022-03-11T16:45:31.7793751Z     java.lang.AssertionError: expected:<1> but was:<0>
2022-03-11T16:45:31.7794233Z         at __randomizedtesting.SeedInfo.seed([ED17663BDAB0F11A:50D6EECED5549CB7]:0)
2022-03-11T16:45:31.7794697Z         at org.junit.Assert.fail(Assert.java:89)
2022-03-11T16:45:31.7795072Z         at org.junit.Assert.failNotEquals(Assert.java:835)
2022-03-11T16:45:31.7795465Z         at org.junit.Assert.assertEquals(Assert.java:647)
2022-03-11T16:45:31.7795835Z         at org.junit.Assert.assertEquals(Assert.java:633)
2022-03-11T16:45:31.7796528Z         at org.opensearch.search.asynchronous.integTests.AsynchronousSearchStatsIT.lambda$testNodewiseStats$1(AsynchronousSearchStatsIT.java:89)
2022-03-11T16:45:31.7797501Z         at java.util.ArrayList.forEach(ArrayList.java:1259)
2022-03-11T16:45:31.7798225Z         at org.opensearch.search.asynchronous.integTests.AsynchronousSearchStatsIT.testNodewiseStats(AsynchronousSearchStatsIT.java:86)
2022-03-11T16:45:36.9802432Z REPRODUCE WITH: ./gradlew ':integTest' --tests "org.opensearch.search.asynchronous.integTests.AsynchronousSearchStatsIT.testNodewiseStats" -Dtests.seed=ED17663BDAB0F11A -Dtests.security.manager=false -Dtests.locale=ar-MA -Dtests.timezone=America/Indiana/Vincennes -Druntime.java=8