Refine creation of Schema to fix #1032

Author: barney2k7

modules/swagger-parser-v2-converter/src/main/java/io/swagger/v3/parser/converter/SwaggerConverter.java

@@ -1060,7 +1060,7 @@ public Parameter convert(io.swagger.models.parameters.Parameter v2Parameter) {
 
                 schema = a;
             } else {
-                schema = new Schema();
+                schema = SchemaTypeUtil.createSchema(sp.getType(), sp.getFormat());
                 schema.setType(sp.getType());
                 schema.setFormat(sp.getFormat());