Fixed the condition of hasServiceParams

`swagger.security` is a definition for the whole API. It is not necessarily set when there is security on individual methods.

Therefore it is better to refer to `swagger.securityDefinitions` to see if you need ` hasServiceParams`.

`isSecure` judgment also refers to ` swagger.securityDefinitions`.

Ref: https://github.com/wcandillon/swagger-js-codegen/blob/master/lib/codegen.js#L41

lib/nodegen.js

@@ -404,7 +404,7 @@ function swagger2node(data, options) {
                 return params.split(',').filter(p => p).some(p => p !== 'body') ? render(content) : '';
             };
         };
-        var hasServiceParams = swagger.host === undefined || swagger.security !== undefined;
+        var hasServiceParams = swagger.host === undefined || swagger.securityDefinitions !== undefined;
 
         // Create node.js
         var nodeSourceCode = CodeGen.getCustomCode({