[BUG] Retry on ConnectionException

[penghuo]

java.lang.RuntimeException: java.net.ConnectException: Timeout connecting to [search-....ap-northeast-1.es.amazonaws.com]
	at org.opensearch.flint.core.storage.OpenSearchReader.hasNext(OpenSearchReader.java:48) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.spark.sql.FlintREPL$.processCommands(FlintREPL.scala:280) ~[opensearch-spark-sql-application_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.spark.sql.FlintREPL$.queryLoop(FlintREPL.scala:156) ~[opensearch-spark-sql-application_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.spark.sql.FlintREPL$.main(FlintREPL.scala:99) ~[opensearch-spark-sql-application_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.spark.sql.FlintREPL.main(FlintREPL.scala) ~[opensearch-spark-sql-application_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:1006) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:180) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:203) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:90) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:1095) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:1104) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
	at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) ~[spark-core_2.12-3.3.2-amzn-0.jar:3.3.2-amzn-0]
Caused by: java.net.ConnectException: Timeout connecting to [search-....ap-northeast-1.es.amazonaws.com]
	at org.opensearch.client.RestClient.extractAndWrapCause(RestClient.java:953) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestClient.performRequest(RestClient.java:332) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestClient.performRequest(RestClient.java:320) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1911) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1877) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1845) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1088) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.flint.core.storage.OpenSearchScrollReader.search(OpenSearchScrollReader.java:50) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.opensearch.flint.core.storage.OpenSearchReader.hasNext(OpenSearchReader.java:41) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	... 16 more
Caused by: java.net.ConnectException: Timeout connecting to [search-....es.amazonaws.com]
	at org.apache.http.nio.pool.RouteSpecificPool.timeout(RouteSpecificPool.java:169) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.nio.pool.AbstractNIOConnPool.requestTimeout(AbstractNIOConnPool.java:632) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.nio.pool.AbstractNIOConnPool$InternalSessionRequestCallback.timeout(AbstractNIOConnPool.java:898) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.reactor.SessionRequestImpl.timeout(SessionRequestImpl.java:198) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processTimeouts(DefaultConnectingIOReactor.java:213) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:158) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64) ~[opensearch-spark-standalone_2.12-0.1.0.jar:0.1.0-SNAPSHOT]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]