change perm and user wsgi file permission

change perm 0640 to 0600
change gnocchi user to root, because wsgi config should use root user

TrivialFix

Change-Id: I474788d4d402aaf085534ea15b554d9c69fb1e56

ansible/roles/aodh/templates/aodh-api.json.j2

@@ -7,13 +7,13 @@
             "source": "{{ container_config_directory }}/aodh.conf",
             "dest": "/etc/aodh/aodh.conf",
             "owner": "aodh",
-            "perm": "0644"
+            "perm": "0600"
         },
         {
             "source": "{{ container_config_directory }}/wsgi-aodh.conf",
             "dest": "/etc/{{ aodh_dir }}/wsgi-aodh.conf",
-            "owner": "aodh",
-            "perm": "0644"
+            "owner": "root",
+            "perm": "0600"
         }
     ]
 }