Fix octavia base_url

Change-Id: Ia1bc78161d4c55ef9f09bbffb764becc88960adb
Related-PROD: PROD-27153
diff --git a/neutron/control/openvswitch/octavia.yml b/neutron/control/openvswitch/octavia.yml
index 9f6345b..81d48bc 100644
--- a/neutron/control/openvswitch/octavia.yml
+++ b/neutron/control/openvswitch/octavia.yml
@@ -9,4 +9,4 @@
           octavia:
             engine: octavia
             driver_path: 'neutron_lbaas.drivers.octavia.driver.OctaviaDriver'
-            base_url: http://${_param:octavia_api_bind_address}:9876
+            base_url: ${_param:cluster_internal_protocol}://${_param:octavia_api_bind_address}:9876