Add group compute in the packer template openstack-compute

Necessary to install pkgs related to compute node

openstack-compute/nodeimage.pkr.hcl

@@ -32,8 +32,7 @@ build {
   }
   provisioner "ansible" {
     use_proxy =  false
-    ansible_env_vars = ["ANSIBLE_HOST_KEY_CHECKING=False"]
-    playbook_file = "../CRI_XCBC/ood-packer.yaml"
+    groups = ["compute"]
     extra_arguments = [
       "-t enable_lmod",
       "-t lmod_user",