[CPPREST] default values unused

Description

Default values are unused in the generated classes constructors.

Swagger-codegen version

2.3.1

Swagger declaration file content

definitions:
  MyData:
    required:
      - name
      - status
    properties:
      name:
        type: string
        default: 'unset'
      status:
        type: boolean
        default: true

will generate this code :

MyData:: MyData()
{
    m_ name = utility::conversions::to_string_t("");
    m_ status = false;
}

while I would like it to be:

MyData:: MyData()
{
    m_ name = utility::conversions::to_string_t("unset");
    m_ status = true;
}

Suggest a fix/enhancement

I've got a fix that I'll submit as a PR to this issue

Start with the CPPREST generator path that creates the generated MyData constructor and compare it with the YAML default fields shown in the issue. Regenerate the example and confirm that the string default becomes "unset" and the boolean default becomes true in the constructor output.