Update main.tf

update `zone` to `location` in `data.google_container_engine_versions.on_prem`

Author: rocpoc

terraform/main.tf

@@ -19,8 +19,8 @@ limitations under the License.
 // Provides access to available Google Container Engine versions in a zone for a given project.
 // https://www.terraform.io/docs/providers/google/d/google_container_engine_versions.html
 data "google_container_engine_versions" "on-prem" {
-  zone    = var.zone
-  project = var.project
+  location = var.zone
+  project  = var.project
 }
 
 # Syntax for using a custom module, which is a collection of resources