Changed host from all to aethercompute for rke2-cleanup playbook

Change-Id: Id80726847e08731f9bfbacb2ee4f583df9a70e00
diff --git a/playbooks/rke2-cleanup.yml b/playbooks/rke2-cleanup.yml
index 8cacc76..c85316d 100644
--- a/playbooks/rke2-cleanup.yml
+++ b/playbooks/rke2-cleanup.yml
@@ -2,7 +2,7 @@
 # Ansible playbook to cleanup nodes after rke cluster
 
 - name: Cleanup node after rke cluster
-  hosts: all
+  hosts: aethercompute
   become: true
   vars:
     rke2_cleanup: true