update host vars

main.tf

@@ -86,7 +86,7 @@ resource "openstack_compute_floatingip_associate_v2" "ohpc" {
   
     # defines ssh connection
     connection {
-      host    =  "${format(var.host_id)}"
+      host    =  "${format("var.host_prefix",var.host_id_formatting)}"
       user        = "${var.ohpc_user}"
       private_key = "${file(var.ssh_private_key)}"
     }