freshmaker: show app config on stage for temp troubleshooting

Seems the parsers on stage are not enabled successfully, show app config
file content for troubleshooting, remove this later.

And a minor var change to restart fedmsg-hub.

inventory/group_vars/freshmaker-stg

@@ -1,8 +1,8 @@
 ---
 # For app config
 freshmaker_messaging_topic_prefix:
-- org.fedoraproject.stg
 - org.fedoraproject.prod
+- org.fedoraproject.stg
 
 freshmaker_parsers:
 - freshmaker.parsers.git:GitReceiveParser

playbooks/groups/freshmaker.yml

@@ -89,3 +89,14 @@
 
   handlers:
   - import_tasks: "{{ handlers_path }}/restart_services.yml"
+
+- name: show freshmaker app config on stage (for temp troubleshoot)
+  hosts: freshmaker-stg
+
+  tasks:
+  - name: Slurp hosts file
+    slurp:
+      src: /etc/freshmaker/config.py
+    register: slurpfile
+
+  - debug: msg="{{ slurpfile['content'] | b64decode }}"