Start log rolling for docker containers too. Fix logrotate for other daemons.

cluster/saltbase/salt/logrotate/init.sls

@@ -16,6 +16,15 @@ logrotate:
       file: {{ file }}
 {% endfor %}
 
+/etc/logrotate.d/docker:
+  file:
+    - managed
+    - source: salt://logrotate/docker
+    - template: jinja
+    - user: root
+    - group: root
+    - mode: 644
+
 /etc/cron.hourly/logrotate:
   file:
     - managed