Describe new variables that have been added to the Ansible playbook in docs-cloud-projects repo

Author: nmelehan-akamai

docs/guides/applications/big-data/manually-deploy-kafka-cluster/index.md

@@ -239,6 +239,9 @@ All secrets are encrypted with the Ansible Vault utility as a best practice.
     -   `region`: The data center region for the cluster.
     -   `image`: The distribution image to be installed on each Kafka instance. The deployment in this guide supports the `ubuntu24.04` image.
     -   `group` and `linode_tags` (optional): Any [groups or tags](/docs/guides/tags-and-groups/) you with to apply to your cluster’s instances for organizational purposes.
+    -   `firewall_label` (optional): The label for a [Cloud Firewall](https://techdocs.akamai.com/cloud-computing/docs/cloud-firewall) that can be created for the cluster. If this label is not provided, the firewall is not created.
+    -   `vpc_label` (optional): The label for a [VPC](https://techdocs.akamai.com/cloud-computing/docs/vpc) that can be created for the cluster. If this label is not provided, the VPC is not created.
+    -   `domain_name` and `ttl_sec` (optional): A domain name and [TTL (in seconds)](https://techdocs.akamai.com/cloud-computing/docs/troubleshooting-dns-records#set-the-time-to-live-or-ttl) for the cluster. Each cluster instance is assigned a subdomain of this domain name. For example, if your domain name is `example.com`, a record named `instance_label.example.com` is created for each instance. If a domain name is not provided, these records are not created.
     -   `cluster_size`: The number of Kafka instances in the cluster deployment. Minimum value of 3.
     -   `sudo_username`: A sudo username for each cluster instance.
     -   `country_name`, `state_or_province_name`, `locality_name`, and `organization_name`: The geographical and organizational information for your self-signed TLS certificate.
@@ -255,6 +258,12 @@ All secrets are encrypted with the Ansible Vault utility as a best practice.
     image: linode/ubuntu24.04
     group:
     linode_tags:
+    firewall_label:
+    vpc_label:
+
+    # Optional settings for DNS
+    domain_name:
+    ttl_sec:
 
     cluster_size: 3
     client_count: 2