Fix gpg fpr check on older distros

tasks/apt.yml

@@ -117,7 +117,6 @@
             ( ( ansible_distribution == "Ubuntu" ) and ( ansible_distribution_version is version('18.04', '>') ) )
           loop: "{{ icinga_gpg_fingerprints }}"
           loop_control:
-            extended: true
             loop_var: fpr
 
       when: ( icinga_asc_file.stat.exists | bool )