Tweak hpfeeds setup

- Fix owner and file permissions for proper comparison
- Only execute the hpfeeds script when the config file has changed

cloud/ansible/openstack/roles/custom_hpfeeds/tasks/main.yaml

@@ -2,9 +2,11 @@
   copy:
     src: ../files/hpfeeds.cfg
     dest: /data/ews/conf
-    owner: root
-    group: root
-    mode: 0644
+    owner: tpot
+    group: tpot
+    mode: 0770
+  register: config
 
 - name: Applying hpfeeds settings
   command: /opt/tpot/bin/hpfeeds_optin.sh --conf=/data/ews/conf/hpfeeds.cfg
+  when: config.changed == true