Add remove_default_node_pool var for zonal and regional cluster

Author: mkubaczyk

cluster_regional.tf

@@ -81,6 +81,8 @@ resource "google_container_cluster" "primary" {
       service_account = "${lookup(var.node_pools[0], "service_account", var.service_account)}"
     }
   }
+
+  remove_default_node_pool = "${var.remove_default_node_pool}"
 }
 
 /******************************************

cluster_zonal.tf

@@ -81,6 +81,8 @@ resource "google_container_cluster" "zonal_primary" {
       service_account = "${lookup(var.node_pools[0], "service_account", var.service_account)}"
     }
   }
+
+  remove_default_node_pool = "${var.remove_default_node_pool}"
 }
 
 /******************************************

variables.tf

@@ -117,6 +117,11 @@ variable "ip_range_services" {
   description = "The secondary ip range to use for pods"
 }
 
+variable "remove_default_node_pool" {
+  description = "Remove default node pool while setting up the cluster"
+  default     = false
+}
+
 variable "node_pools" {
   type        = "list"
   description = "List of maps containing node pools"