Enable internal TLS options for ironic API

This was missing from the haproxy configuration. This commit sets that
up.

Change-Id: I33a16d79cc26c8c239b575361517e0151f14503c
Related-Bug: #1820815

manifests/haproxy.pp

@@ -1284,6 +1284,7 @@ class tripleo::haproxy (
       mode              => 'http',
       public_ssl_port   => $ports[ironic_api_ssl_port],
       service_network   => $ironic_network,
+      member_options    => union($haproxy_member_options, $internal_tls_member_options),
     }
   }