Add neutron metadata for memcache security strategy

Related-Prod: PROD-22099 (PROD:22099)

Change-Id: I3371c13c2f581521bc57029a186770997c49d0f2
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index c5464d3..af2ba0c 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -9,3 +9,7 @@
     # Openstack memcache security
     openstack_memcache_security_enabled: False
     openstack_memcache_security_strategy: 'ENCRYPT'
+    # Neutron
+    neutron_memcache_security_enabled: ${_param:openstack_memcache_security_enabled}
+    neutron_memcache_secret_key: ''
+