spampd: Check SA config before restarting things

This will leave the config broken on the machine, but it's an easy check
to add.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/spampd/tasks/main.yml

@@ -39,6 +39,9 @@
   notify:
     restart spampd
 
+- name: check SA config validity
+  command: /usr/bin/vendor_perl/spamassassin --lint
+
 - name: activate systemd timers
   service: name={{ item }} enabled=yes state=started
   with_items: