fix: Correcting namespace for csi-secret-store-provider-aws module

[MaiCabrera]

What does this PR do?
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Motivation
Trying to just leverage the csi secret store module to mount secrets to my main microservices

Resolves #1172

[nahum-landa]

Error: namespaces "kube-system" already exists
│
│ with module.kubernetes_addons.module.csi_secrets_store_provider_aws[0].kubernetes_namespace_v1.csi_secrets_store_provider_aws,
│ on .terraform/modules/kubernetes_addons/modules/kubernetes-addons/csi-secrets-store-provider-aws/main.tf line 6, in resource "kubernetes_namespace_v1" "csi_secrets_store_provider_aws":
│ 6: resource "kubernetes_namespace_v1" "csi_secrets_store_provider_aws" {

[csantanapr]

Creating the namespace should be optional now
https://github.com/aws-ia/terraform-aws-eks-blueprints/blob/main/modules/kubernetes-addons/csi-secrets-store-provider-aws/main.tf#L6

[lordz-ei]

Creating the namespace should be optional now https://github.com/aws-ia/terraform-aws-eks-blueprints/blob/main/modules/kubernetes-addons/csi-secrets-store-provider-aws/main.tf#L6

Nope, still tries to create namespace if namespace is kube-system.

[lordz-md]

I believe this is solved here https://github.com/aws-ia/terraform-aws-eks-blueprints-addons/blob/main/modules/csi-secrets-store-provider-aws/main.tf#L12

[saibossai]

Created the pr: #1525 to fix the namespace creation issue if the namespace: kube-system already exists.