Ensure that host volumes are only on the required nodes

1-nixos-node/node.tf

@@ -14,12 +14,13 @@ terraform {
 provider "template" {}
 
 variable "nodes" {
-  description = "Map of nodes with host, password, and bind interface"
+  description = "Map of nodes with host, password, bind interface, and host volumes"
   type = map(object({
     host           = string
     password       = string
     bind_interface = string
     bootstrap      = optional(bool, false) # Optional field for bootstrap nodes
+    host_volumes   = list(string)
   }))
 }
 
@@ -29,6 +30,7 @@ locals {
       hostname       = v.host
       bind_interface = v.bind_interface
       bootstrap      = v.bootstrap
+      host_volumes   = v.host_volumes
     })
   }
 }