Fix/ running ArgoCd example on GovCloud (#397)

Author: camba1

docs/add-ons/nginx.md

@@ -20,7 +20,7 @@ NAME                                                              READY   STATUS
 eks-blueprints-addon-ingress-nginx-78b8567p4q6   1/1     Running   0          4d10h
 ```
 
-Note that the ingress controller is deployed in the `nginx` namespace.
+Note that the ingress controller is deployed in the `ingress-nginx` namespace.
 
 You can optionally customize the Helm chart that deploys `nginx` via the following configuration.
 

examples/gitops/argocd/main.tf

@@ -34,7 +34,7 @@ data "aws_eks_cluster_auth" "cluster" {
 }
 
 provider "aws" {
-  region = "us-west-2"
+  region = var.region
   alias  = "default"
 }
 

examples/gitops/argocd/variables.tf

@@ -18,6 +18,12 @@ variable "environment" {
 
 variable "zone" {
   type        = string
-  description = "zone, e.g. dev or qa or load or ops etc..."
+  description = "Zone, e.g. dev or qa or load or ops etc..."
   default     = "dev"
 }
+
+variable "region" {
+  type        = string
+  description = "Region in which to deploy the cluster"
+  default     = "us-west-2"
+}