Exposing NeutronDhcpOvsIntegrationBridge

Using this, users can assign already available parameter
ovs_integration_bridge in dhcp_agent.ini

Change-Id: I45cc0032ebaaab7022e8a692ecd63045fe08eea2
(cherry picked from commit 973395d4a6)

puppet/services/neutron-dhcp.yaml

@@ -84,10 +84,15 @@ parameters:
     type: string
     description: Specifies the default CA cert to use if TLS is used for
                  services in the internal network.
+  NeutronDhcpOvsIntegrationBridge:
+    default: ''
+    type: string
+    description: Name of Open vSwitch bridge to use
 
 conditions:
   service_debug_unset: {equals: [{get_param: NeutronDhcpAgentDebug}, '']}
   internal_tls_enabled: {equals: [{get_param: EnableInternalTLS}, true]}
+  dhcp_ovs_intergation_bridge_unset: {equals: [{get_param: NeutronDhcpOvsIntegrationBridge}, '']}
 
 resources:
 
@@ -135,6 +140,10 @@ outputs:
                 neutron::agents::dhcp::ovsdb_agent_ssl_cert_file: '/etc/pki/tls/certs/neutron.crt'
                 neutron::agents::dhcp::ovsdb_agent_ssl_ca_file: {get_param: InternalTLSCAFile}
               - {}
+          - if:
+              - dhcp_ovs_intergation_bridge_unset
+              - {}
+              - neutron::agents::dhcp::ovs_integration_bridge: {get_param: NeutronDhcpOvsIntegrationBridge}
       service_config_settings:
         fluentd:
           tripleo_fluentd_groups_neutron_dhcp: