Add possibility to manage file permissions of config files.

Fixes-bug: PROD-36552
Change-Id: If346c0996b4ab957edc02b56fbaebda2fa671ab6
diff --git a/metadata/service/file_permissions.yml b/metadata/service/file_permissions.yml
new file mode 100644
index 0000000..c5a7d57
--- /dev/null
+++ b/metadata/service/file_permissions.yml
@@ -0,0 +1,5 @@
+parameters:
+  barbican:
+    directories:
+      /etc/barbican:
+        mode: '0750'
\ No newline at end of file