OpenSearch: [CI] o.o.cluster.remote.test.RemoteClustersIT.testHAProxyModeConnectionWorks multiple failures

Multiple PR test failures (most recent for the following:

./gradlew ':qa:remote-clusters:integTest' --tests "org.opensearch.cluster.remote.test.RemoteClustersIT.testHAProxyModeConnectionWorks" -Dtests.seed=403F055E1F14E391 -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=ar-TN -Dtests.timezone=Africa/Conakry -Druntime.java=17

2> java.lang.AssertionError
        at __randomizedtesting.SeedInfo.seed([403F055E1F14E391:4749D095249295CC]:0)
        at org.junit.Assert.fail(Assert.java:86)
        at org.junit.Assert.assertTrue(Assert.java:41)
        at org.junit.Assert.assertTrue(Assert.java:52)
        at org.opensearch.cluster.remote.test.RemoteClustersIT.testHAProxyModeConnectionWorks(RemoteClustersIT.java:125)
  1> [2021-12-10T20:14:09,766][INFO ][o.o.c.r.t.RemoteClustersIT] [testProxyModeConnectionWorks] before test
  1> [2021-12-10T20:14:10,385][INFO ][o.o.c.r.t.RemoteClustersIT] [testProxyModeConnectionWorks] Configuring remote cluster [opensearch-2:9300]
  1> [2021-12-10T20:14:10,487][INFO ][o.o.c.r.t.RemoteClustersIT] [testProxyModeConnectionWorks] Connection info: org.opensearch.client.cluster.RemoteConnectionInfo@688b190
  1> [2021-12-10T20:14:10,693][INFO ][o.o.c.r.t.RemoteClustersIT] [testProxyModeConnectionWorks] after test
  1> [2021-12-10T20:14:10,737][INFO ][o.o.c.r.t.RemoteClustersIT] [testSniffModeConnectionFails] before test
  1> [2021-12-10T20:14:11,294][INFO ][o.o.c.r.t.RemoteClustersIT] [testSniffModeConnectionFails] Configuring remote cluster [opensearch-2:9300]
  1> [2021-12-10T20:14:11,363][INFO ][o.o.c.r.t.RemoteClustersIT] [testSniffModeConnectionFails] Connection info: org.opensearch.client.cluster.RemoteConnectionInfo@5aef8603
  1> [2021-12-10T20:14:11,500][INFO ][o.o.c.r.t.RemoteClustersIT] [testSniffModeConnectionFails] after test
  2> NOTE: leaving temporary files on disk at: /var/CITOOL/workflow/OpenSearch_CI/PR_Checks/Gradle_Check/search/qa/remote-clusters/build/testrun/integTest/temp/org.opensearch.cluster.remote.test.RemoteClustersIT_403F055E1F14E391-001
  2> NOTE: test params are: codec=Lucene87, sim=Asserting(RandomSimilarity(queryNorm=false): {}), locale=ar-TN, timezone=Africa/Conakry
  2> NOTE: Linux 5.4.0-1045-aws amd64/Eclipse Adoptium 17.0.1 (64-bit)/cpus=72,threads=1,free=451487832,total=536870912
  2> NOTE: All tests run in this JVM: [RemoteClustersIT]

Note:

        RemoteConnectionInfo rci = cluster1Client().cluster().remoteInfo(new RemoteInfoRequest(), RequestOptions.DEFAULT).getInfos().get(0);
        logger.info("Connection info: {}", rci);
        assertTrue(rci.isConnected());

RemoteConnectionInfo logging is useless. (todo: add toString support for logging)