Add ability to configure notification workers

Change-Id: I38e9c8a337f963dd3519fe2fc1c8e882405c8bb1
Related-Prod: https://mirantis.jira.com/browse/PROD-23449
diff --git a/README.rst b/README.rst
index 3855b53..0ca4467 100644
--- a/README.rst
+++ b/README.rst
@@ -42,6 +42,13 @@
           user: openstack
           password: pwd
           virtual_host: '/openstack'
+        notification:
+          workers: 8
+          batch_timeout: 10
+          batch_size: 100
+          policy:
+            segregation: 'rule:context_is_admin'
+            'telemetry:get_resource':
 
 Enable CORS parameters
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