[CI] Add resource labels to make terraform plan clean

I should probaly investigate version bumps or something to see if this is
fixed later on.

Author: boomanaiden154

premerge/gke_cluster/main.tf

@@ -23,6 +23,13 @@ resource "google_container_node_pool" "llvm_premerge_linux_service" {
 
   node_config {
     machine_type = "e2-highcpu-4"
+    # Terraform wants to recreate the node pool everytime whe running
+    # terraform apply unless we explicitly set this.
+    # TODO(boomanaiden154): Look into why terraform is doing this so we do
+    # not need this hack.
+    resource_labels = {
+      "goog-gke-node-pool-provisioning-model" = "on-demand"
+    }
   }
 }
 
@@ -89,5 +96,12 @@ resource "google_container_node_pool" "llvm_premerge_windows" {
       "disable-legacy-endpoints" = "true"
     }
     disk_size_gb = 200
+    # Terraform wants to recreate the node pool everytime whe running
+    # terraform apply unless we explicitly set this.
+    # TODO(boomanaiden154): Look into why terraform is doing this so we do
+    # not need this hack.
+    resource_labels = {
+      "goog-gke-node-pool-provisioning-model" = "on-demand"
+    }
   }
 }