OSDOCS-3889 add NLB to AWS networking config

modules/installation-aws-config-yaml.adoc

@@ -44,9 +44,7 @@ endif::[]
 [id="installation-aws-config-yaml_{context}"]
 = Sample customized install-config.yaml file for AWS
 
-You can customize the installation configuration file (`install-config.yaml`) to specify more details about
-your {product-title} cluster's platform or modify the values of the required
-parameters.
+You can customize the installation configuration file (`install-config.yaml`) to specify more details about your {product-title} cluster's platform or modify the values of the required parameters.
 
 ifndef::china,gov,secret[]
 [IMPORTANT]
@@ -73,6 +71,7 @@ controlPlane: <3> <4>
   name: master
   platform:
     aws:
+      lbType: NLB <12>
       zones:
 ifdef::china[]
       - cn-north-1a
@@ -367,6 +366,9 @@ endif::vpc,restricted[]
 ====
 For production {product-title} clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your `ssh-agent` process uses.
 ====
+ifndef::vpc,restricted[]
+<12> You can provide either the `NLB` or `Classic` load balancer type in this parameter. If you do not specify a value, the installation program defaults to `Classic`.
+endif::vpc,restricted[]
 ifdef::private[]
 ifndef::openshift-origin[]
 <14> How to publish the user-facing endpoints of your cluster. Set `publish` to `Internal` to deploy a private cluster, which cannot be accessed from the internet. The default value is `External`.

modules/installation-configuration-parameters.adoc

@@ -627,6 +627,12 @@ endif::openshift-origin[]
 |Specify one or more repositories that may also contain the same images.
 |Array of strings
 
+ifdef::aws[]
+|`platform.aws.lbType`
+|Required to set the NLB load balancer type in AWS. Valid values are `Classic` or `NLB`. If no value is specified, the installation program defaults to `Classic`. The installation program sets the value provided here in the ingress cluster configuration object. If you do not specify a load balancer type for other ingress controllers, they use the type set in this parameter.
+|`Classic` or `NLB`. The default value is `Classic`.
+endif::aws[]
+
 |`publish`
 |How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.
 |