Update openstack options in gpu template

openstack-gpu/nodeimage.pkr.hcl

@@ -3,9 +3,14 @@ locals {
 }
 
 source "openstack" "image" {
+  skip_create_image = var.skip_create_image
   image_name        = local.local_image_name
   source_image      = var.source_image
+  image_members     = var.image_membership
+  image_auto_accept_members = var.auto_accept_members
+  image_tags        = var.image_tags
   flavor            = var.flavor
+  instance_name     = var.build_instance_name
 
   floating_ip_network = var.floating_ip_network
   networks = var.networks