fix variable name

defaults/main.yml

@@ -7,4 +7,4 @@ ntp_servers:
 ntp_timezone: Europe/Berlin
 
 # Varaiables only used on UCS systems
-ntp_signed_requests: 'yes'
+ntp_sign_requests: 'yes'

tasks/setup_ucs.yml

@@ -15,6 +15,6 @@
     - name: Configure signed ntp time requests
       ucr:
         path: "ntp/signed"
-        value: "{{ ntp_signed_requests }}"
+        value: "{{ ntp_sign_requests }}"
   become: True
   become_user: root