playbooks/dns: Restricted gathering of ssh keys to public systems

playbooks/dns.yml

@@ -8,7 +8,7 @@
       delegate_to: localhost
       register: ssh_key_dns_fpr_raw
       changed_when: False
-      loop: "{{ groups['all'] }}"
+      loop: "{{ groups['public_available'] }}"
     - name: Remap ssh host key dns fingerprints
       set_fact:
         ssh_key_dns_fpr_map: "{{ ssh_key_dns_fpr_raw.results | items2dict(key_name='item', value_name='stdout') }}"