fix permissions for ceph.conf file

Change-Id: I6d422c2411c5f1820c1095ff24bfc119efc5871a
diff --git a/ceph/common.sls b/ceph/common.sls
index 265d1f0..c6067b0 100644
--- a/ceph/common.sls
+++ b/ceph/common.sls
@@ -25,6 +25,8 @@
 common_config:
   file.managed:
   - name: {{ common.prefix_dir }}/etc/ceph/{{ common.get('cluster_name', 'ceph') }}.conf
+  - user: ceph
+  - group: ceph
   - source: salt://ceph/files/{{ common.version }}/ceph.conf.{{ grains.os_family }}
   - template: jinja
   {% if not common.get('container_mode', False) %}
@@ -71,5 +73,3 @@
 {%- endif %}
 
 {%- endfor %}
-
-