Add Neutron BGPVPN support for horizon

Related-PROD: PROD-17948

Depends-On: Ie9ce059e94f911c37403561f37932ccb5f2cd2f5

Change-Id: I01e06a13b752923286bfe42f3d7760e9b961f86e
diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 99d165b..0325076 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -9,6 +9,7 @@
     horizon_identity_version: 3
     horizon_identity_encryption: none
     horizon_identity_endpoint_type: internalURL
+    neutron_enable_bgp_vpn: false
   horizon:
     server:
       enabled: true
@@ -68,4 +69,8 @@
           source: file
           name: heat_policy.json
           enabled: true
+        networking_bgpvpn:
+          source: file
+          name: bgpvpn_policy.json
+          enabled: ${_param:neutron_enable_bgp_vpn}