changed "net" to "network" for ohpc, ood, and nodes modules

main.tf

@@ -81,7 +81,7 @@ module "create-ood-instance" {
     flavor = var.flavor
     key_pair = "${module.import-keypair.keypair_name}"
     internal_network = var.internal_net
-    external_net = var.external_network
+    external_network = var.external_network
     floating_ip_ood = "${module.floating-ip-address.ood_address}"
     host_prefix = var.host_prefix
     ood_user = var.ood_user