Migrate cluster modules from map(map(string)) to map(object)

Author: pst

.github/workflows/main.yml

@@ -173,7 +173,7 @@ jobs:
         sed -i 's/region = ""/region = "eu-west-1"/g' eks_zero_providers.tf || true
 
         # EKS: set cluster_availability_zones
-        sed -i 's/cluster_availability_zones = ""/cluster_availability_zones = "eu-west-1a,eu-west-1b"/g' eks_zero_cluster.tf || true
+        sed -i 's/cluster_availability_zones = \[\]/cluster_availability_zones = ["eu-west-1a", "eu-west-1b"]/g' eks_zero_cluster.tf || true
 
         # GKE: set project_id
         sed -i 's/project_id = ""/project_id = "terraform-kubestack-testing"/g' gke_zero_cluster.tf || true
@@ -182,7 +182,7 @@ jobs:
         sed -i 's/region = ""/region = "europe-west1"/g' gke_zero_cluster.tf || true
 
         # GKE: set cluster_node_locations
-        sed -i 's/cluster_node_locations = ""/cluster_node_locations = "europe-west1-b,europe-west1-c,europe-west1-d"/g' gke_zero_cluster.tf || true
+        sed -i 's/cluster_node_locations = \[\]/cluster_node_locations = ["europe-west1-b", "europe-west1-c", "europe-west1-d"]/g' gke_zero_cluster.tf || true
 
     - name: "Terraform init"
       working-directory: ./kubestack-starter-${{ matrix.starter }}