JAVA-4320 fix server selection flaky test (mongodb#1847)

* JAVA-4320 fix server selection flaky test

* set server selection threshold to 3seconds

* serverSelection flaky test, update comments

* server selection , update threshold to 30_000 MS

---------

Co-authored-by: Almas Abdrazak <abdrazak.almas@mongodb.com>

Author: strogiyotec

driver-sync/src/test/functional/com/mongodb/client/AbstractServerSelectionProseTest.java

@@ -20,6 +20,9 @@
 import com.mongodb.ServerAddress;
 import com.mongodb.event.CommandStartedEvent;
 import com.mongodb.internal.connection.TestCommandListener;
+
+import java.util.concurrent.TimeUnit;
+
 import org.bson.BsonArray;
 import org.bson.BsonBoolean;
 import org.bson.BsonDocument;
@@ -77,6 +80,7 @@ void operationCountBasedSelectionWithinLatencyWindow() throws InterruptedExcepti
         MongoClientSettings clientSettings = getMongoClientSettingsBuilder()
                 .applicationName(appName)
                 .applyConnectionString(multiMongosConnectionString)
+                .applyToClusterSettings(builder -> builder.localThreshold(30_000L, TimeUnit.MILLISECONDS))
                 .applyToConnectionPoolSettings(builder -> builder
                         .minSize(tasks))
                 .addCommandListener(commandListener)