Fix file permissions.

Fixes-bug: PROD-36504
Change-Id: I02edb8108a748fe2e97a5aeddc1a931d824439ad
diff --git a/README.rst b/README.rst
index 75ce582..961e8db 100644
--- a/README.rst
+++ b/README.rst
@@ -1869,6 +1869,37 @@
           group: 224.0.0.1
 
 
+Change files/directories permissions for neutron service:
+=======================================
+In order to change file permissions the following should be set:
+
+'files' - block to set permissions for files.
+- full path to file
+- user ( default value is 'root' ) this parameter is optional.
+- group ( default value is 'neutron' ) this parameter is optional
+- mode ( default value is '0640' ) this parameter is optional
+
+'directories' - block to set permissions for directories.
+- full path to directory
+- user ( default value is 'root' ) this parameter is optional
+- group ( default value is 'neutron' ) this parameter is optional
+- mode ( default value is '0750' ) this parameter is optional
+
+.. code-block:: yaml
+
+    neutron:
+      files:
+        /etc/neutron/neutron.conf:
+          user: 'root'
+          group: 'neutron'
+          mode: '0750'
+      directories:
+        /etc/neutron:
+          user: 'root'
+          group: 'neutron'
+          mode: '0750'
+
+
 Upgrades
 ========