Don't look for master.cf.{{ grains['nodename'] }} use node_id instead.

Signed-off-by: Maximilian Wilhelm <max@rfc2324.org>

postfix/init.sls

@@ -23,7 +23,6 @@ postfix:
   file.managed:
     - source:
       - salt://postfix/master.cf.{{ grains['id'] }}
-      - salt://postfix/master.cf.{{ grains['nodename'] }}
       - salt://postfix/master.cf.{{ grains.oscodename }}
       - salt://postfix/master.cf
     - watch_in: