Power VS: Enable global routing for cloud connection and specify dns

Because the VPC will not always be in the same DC as the Power VS
service instance, we want to enable global routing to allow for
this. Additionally we want to specify the DNS server as it's
required until private cluster support lands.

data/data/powervs/cluster/power_network/pi_network.tf

@@ -12,15 +12,17 @@ resource "ibm_pi_dhcp" "new_dhcp_service" {
   count                  = var.pvs_network_name == "" ? 1 : 0
   pi_cloud_instance_id   = var.cloud_instance_id
   pi_cloud_connection_id = data.ibm_pi_cloud_connection.cloud_connection.id
+  pi_dns_server          = "1.1.1.1"
 }
 
 resource "ibm_pi_cloud_connection" "new_cloud_connection" {
-  count                           = var.cloud_conn_name == "" ? 1 : 0
-  pi_cloud_instance_id            = var.cloud_instance_id
-  pi_cloud_connection_name        = "cloud-con-${var.cluster_id}"
-  pi_cloud_connection_speed       = 50
-  pi_cloud_connection_vpc_enabled = true
-  pi_cloud_connection_vpc_crns    = [var.vpc_crn]
+  count                              = var.cloud_conn_name == "" ? 1 : 0
+  pi_cloud_instance_id               = var.cloud_instance_id
+  pi_cloud_connection_name           = "cloud-con-${var.cluster_id}"
+  pi_cloud_connection_speed          = 50
+  pi_cloud_connection_global_routing = true
+  pi_cloud_connection_vpc_enabled    = true
+  pi_cloud_connection_vpc_crns       = [var.vpc_crn]
 }
 
 data "ibm_pi_cloud_connection" "cloud_connection" {