use separated named config files

roles/nameserver/tasks/configure_bind_snmpd.yml

@@ -32,7 +32,7 @@
     state: present
     line: '\tstatistics-file "/var/cache/bind/stats";\n\tzone-statistics yes;'
     insertafter: "options {"
-    validate: "{{ named_checkconf }} %s"
+    validate: "{{ named_checkconf }} {{ named_conf }}"
   notify: restart_named
 
 - name: nameserver | snmpd | configure extend

roles/nameserver/vars/ubuntu.yml

@@ -10,6 +10,7 @@ powerdns_backends:
   - package: pdns-backend-mysql
 
 # named / bind specific
+named_conf: /etc/bind/named.conf
 named_conf_zones: /etc/bind/named.conf.default-zones
 named_conf_options: /etc/bind/named.conf.options
 named_conf_local: /etc/bind/named.conf.local