`io.jenkins.blueocean.blueocean_git_pipeline.GitScmTest.shouldNotCreateCredentialsForBadUrl2` is flakey

[timja]

e.g. https://github.com/jenkinsci/bom/pull/5519/checks?check_run_id=48087980127

But I've seen it ~5 times in last couple of weeks

com.mashape.unirest.http.exceptions.UnirestException: java.net.SocketTimeoutException: Read timed out

java.lang.RuntimeException: com.mashape.unirest.http.exceptions.UnirestException: java.net.SocketTimeoutException: Read timed out
	at io.jenkins.blueocean.rest.impl.pipeline.PipelineBaseTest$RequestBuilder.build(PipelineBaseTest.java:581)
	at io.jenkins.blueocean.blueocean_git_pipeline.GitScmTest.shouldNotCreateCredentialsForBadUrl2(GitScmTest.java:534)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.jvnet.hudson.test.JenkinsRule$1.evaluate(JenkinsRule.java:658)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: com.mashape.unirest.http.exceptions.UnirestException: java.net.SocketTimeoutException: Read timed out
	at com.mashape.unirest.http.HttpClientHelper.request(HttpClientHelper.java:143)
	at com.mashape.unirest.request.BaseRequest.asObject(BaseRequest.java:80)
	at io.jenkins.blueocean.rest.impl.pipeline.PipelineBaseTest$RequestBuilder.build(PipelineBaseTest.java:577)
	... 5 more
Caused by: java.net.SocketTimeoutException: Read timed out
	at java.base/sun.nio.ch.NioSocketImpl.timedRead(NioSocketImpl.java:278)
	at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:304)
	at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:346)
	at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:796)
	at java.base/java.net.Socket$SocketInputStream.read(Socket.java:1099)
	at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
	at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
	at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:280)
	at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138)
	at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
	at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
	at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
	at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
	at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
	at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
	at com.mashape.unirest.http.HttpClientHelper.request(HttpClientHelper.java:138)
	... 7 more