openqa: don't check ownership of client config

It gets ping-ponged around depending on whether the host is
a worker as well or not, if we check it here, it gets changed
to root then right back to _openqa-worker when the worker
play runs.

roles/openqa_server/tasks/main.yml

@@ -156,7 +156,7 @@
   when: services|changed
 
 - name: openQA client config
-  template: src=client.conf.j2 dest=/etc/openqa/client.conf owner=root group=root mode=0600
+  template: src=client.conf.j2 dest=/etc/openqa/client.conf mode=0600
   tags:
   - config