Add possibility to manage file permissions of config files

Fixes-bug: PROD-36553
Change-Id: I4a8314449ecf6cb56e32fa04236899f1a914e164
diff --git a/metadata/service/statsd/cluster.yml b/metadata/service/statsd/cluster.yml
index 723acfa..951873b 100644
--- a/metadata/service/statsd/cluster.yml
+++ b/metadata/service/statsd/cluster.yml
@@ -3,6 +3,7 @@
 classes:
 - service.gnocchi.common.cluster
 - service.gnocchi.support
+- service.gnocchi.file_permissions
 parameters:
   gnocchi:
     statsd:
diff --git a/metadata/service/statsd/single.yml b/metadata/service/statsd/single.yml
index 67bf0a5..b0484bd 100644
--- a/metadata/service/statsd/single.yml
+++ b/metadata/service/statsd/single.yml
@@ -3,6 +3,7 @@
 classes:
 - service.gnocchi.common.single
 - service.gnocchi.support
+- service.gnocchi.file_permissions
 parameters:
   gnocchi:
     statsd: