DOC-4597 added extra info from George about silent install props

Author: andy-stark-redis

content/integrate/redis-data-integration/installation/install-vm.md

@@ -232,6 +232,10 @@ title = "RDI Silent Installer Config"
 scaffold = true
 deploy_directory = "/opt/rdi/config"
 
+# Needed if the installer detects a DNS resolver with a loopback address
+# as an upstream DNS server
+nameservers = ["8.8.8.8", "8.8.4.4"]
+
 [rdi.database]
 host = "localhost"
 port = 12001
@@ -260,6 +264,7 @@ The sections below describe the properties in more detail.
 | `scaffold` | Do you want to enable [scaffolding]({{< relref "/integrate/redis-data-integration/reference/cli/redis-di-scaffold" >}}) during the install? (true/false) |
 | `db_index` | Integer to specify the source database type for scaffolding. The options are 2 (MySQL/MariaDB), 3 (Oracle), 4 (PostgreSQL), and 5 (SQL Server). |
 | `deploy_directory` | Path to the directory where you want to store the RDI configuration. |
+| `nameservers` | 
 
 #### `rdi.database`