Refactor firewall rules and add network resources for production environment

terraform/prod_network.tf

@@ -0,0 +1,9 @@
+resource "hcloud_network" "prodnet" {
+  name     = "prod-network"
+  ip_range = "10.0.0.0/16"
+}
+
+resource "netbox_ip_range" "prodnet" {
+  start_address = "10.0.0.1/16"
+  end_address   = "10.0.255.254/16"
+}