Added possibility to manage  nova metadata protocol for Neutron

PROD-34843

Change-Id: I16e94c90d2290c8e3a76e912e131d576683ca138
diff --git a/README.rst b/README.rst
index 6b71fc8..188b19f 100644
--- a/README.rst
+++ b/README.rst
@@ -1728,6 +1728,20 @@
           get_bgpvpn:tenant_id:
 
 
+Set nova_metadata_protocol for Neutron
+---------------------------------------
+
+.. code-block:: yaml
+
+    neutron:
+      gateway:
+        metadata:
+          protocol: http
+      compute:
+        metadata:
+          protocol: http
+
+
 Upgrades
 ========