geoipupdate: download dbs on install/config change

We want the GeoIP databases to be ready for use by software installed
by dependant roles; run geoipupdate when it's installed or configured.

roles/geoipupdate/tasks/main.yml

@@ -2,9 +2,11 @@
 
 - name: install geoipupdate
   pacman: name=geoipupdate state=present
+  register: installation
 
 - name: configure geoipupdate
   template: src=GeoIP.conf.j2 dest=/etc/GeoIP.conf owner=root group=root mode=0600
+  register: configuration
 
 - name: create drop-in directory for geoipupdate.service
   file: path=/etc/systemd/system/geoipupdate.service.d state=directory owner=root group=root mode=0755
@@ -14,5 +16,9 @@
   notify:
     - daemon reload
 
+- name: run geoipupdate after installation or configuration change
+  systemd: name=geoipupdate state=restarted
+  when: installation is changed or configuration is changed
+
 - name: start and enable geoipupdate.timer
   systemd: name=geoipupdate.timer enabled=yes state=started