Link to new vdb in references output

spec/lib/common/models/wp_plugin_spec.rb

@@ -8,6 +8,7 @@ describe WpPlugin do
     let(:options)        { { name: 'white-rabbit' } }
     let(:vulns_file)     { MODELS_FIXTURES + '/wp_plugin/vulnerable/plugins_vulns.json' }
     let(:expected_refs)  { {
+        :id  => ['2993'],
         :url => ['Ref 1', 'Ref 2'],
         :cve => ['2011-001'],
         :secunia => ['secunia'],