get rid of deprecated code.

roles/common/tasks/ntp.yml

@@ -10,7 +10,7 @@
       - ntpsec
     state: present
   when:
-    - ansible_os_family == "Debian"
+    - ansible_facts.os_family == "Debian"
     - groups['file_server']|string is search(inventory_hostname)
   tags:
     - ntp-server
@@ -33,7 +33,7 @@
     group: ntpsec
     mode: '0755'
   when:
-    - ansible_distribution == "Debian"
+    - ansible_facts.distribution == "Debian"
 
 
 - name: (ntp.yml) Backup installation version of file '/etc/ntpsec/ntp.conf'