fix client not retry when Connection refused

[abcfy2]

Summary

Sometime when server is busy or temporary down (may restarted later), will see this error:

java.util.concurrent.CompletionException: com.clickhouse.client.api.ClientException: Failed to connect
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1595)
Caused by: com.clickhouse.client.api.ClientException: Failed to connect
	at com.clickhouse.client.api.internal.HttpAPIClientHelper.executeRequest(HttpAPIClientHelper.java:400)
	at com.clickhouse.client.api.Client.lambda$insert$5(Client.java:1370)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
	... 3 more
Caused by: org.apache.hc.client5.http.HttpHostConnectException: Connect to http://localhost:8123 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused
	at java.base/sun.nio.ch.Net.pollConnect(Native Method)
	at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)
	at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:542)
	at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:592)
	at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
	at java.base/java.net.Socket.connect(Socket.java:751)
	at org.apache.hc.client5.http.socket.PlainConnectionSocketFactory.lambda$connectSocket$0(PlainConnectionSocketFactory.java:91)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:748)
	at org.apache.hc.client5.http.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:90)
	at org.apache.hc.client5.http.socket.ConnectionSocketFactory.connectSocket(ConnectionSocketFactory.java:123)
	at org.apache.hc.client5.http.impl.io.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:189)
	at org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:450)
	at org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:162)
	at org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:172)
	at org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:142)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:192)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.execute(HttpRequestRetryExec.java:113)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ContentCompressionExec.execute(ContentCompressionExec.java:152)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.RedirectExec.execute(RedirectExec.java:116)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:87)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:55)
	at org.apache.hc.client5.http.classic.HttpClient.executeOpen(HttpClient.java:183)
	at com.clickhouse.client.api.internal.HttpAPIClientHelper.executeRequest(HttpAPIClientHelper.java:377)
	... 5 more

But HttpHostConnectException is ClientFaultCause.ConnectTimeout which should retry by default.

This PR will solve this issue.