add port to config model for cqld4 adapter

adapter-cqld4/src/main/java/io/nosqlbench/adapter/cqld4/Cqld4Space.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 nosqlbench
+ * Copyright (c) 2022-2023 nosqlbench
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -284,6 +284,7 @@ public class Cqld4Space implements AutoCloseable {
             .add(Param.optional("localdc"))
             .add(Param.optional(List.of("secureconnectbundle", "scb")))
             .add(Param.optional(List.of("hosts", "host")))
+            .add(Param.defaultTo("port",9041))
             .add(Param.optional("driverconfig", String.class))
             .add(Param.optional("username", String.class, "user name (see also password and passfile)"))
             .add(Param.optional("userfile", String.class, "file to load the username from"))

adapter-cqld4/src/main/resources/cqld4.md

@@ -58,6 +58,7 @@ nb5 ... driverconfig='http://gist.github.com...'
 - **hosts** & **localdc** - (required unless using scb) - Set the endpoint and local datacenter name
   for the driver.
   - example: `host=mydsehost localdc=testdc1`
+- **port** (optional for hosts) - Set the port to connect to for the CQL binary protocol.
 - **driverconfig** - (explained above) - set the configuration source for the driver.
 - **username** OR **userfile** - (optional, only one may be used) - If you need to specify a
   username but want to put it in a file instead, simply use the `userfile=myfile` option. It is