logrotate: Don't rotate wtmp and btmp on buster as it has its own config for that - fixup

logrotate/init.sls

@@ -5,9 +5,10 @@ logrotate:
 
 /etc/logrotate.conf:
   file.managed:
-    - source: salt://logrotate/files/logrotate.conf
+    - source: salt://logrotate/files/logrotate.conf.j2
     - user: root
     - group: root
     - mode: 644
+    - template: jinja
     - require:
       - pkg: logrotate