Float values in nested examples get scrambled

Description

Issue with float values in nested schema examples. Those values are converted into lengthy floats with rounding errors.

Swagger-codegen version

Latest web version

Swagger declaration file content or url

swagger: '2.0'
info:
  version: '0.1'
  title: title
schemes:
  - http
consumes:
  - application/json
paths:
  /example:
    get:
      parameters:
        - name: parameter_name
          in: body
          description: description
          schema:
            $ref: '#/definitions/ExampleBody'
      responses:
        '200':
          description: OK
definitions:
  ExampleBody:
    type: object
    properties:
      items:
        type: array
        items:
          $ref: '#/definitions/FooItem'
    example:
      items:
        - 123.45
        - 678.91
  FooItem:
    properties:
      price:
        type: number
        format: float

Command line used for generation

Tested w/ python-flask and go-server, but probably more/all are affected.

Steps to reproduce

1. Paste above YAML into editor, note the example value "678.91"
2. Generate server
3. Look at generated YAML file, note the "new" value "678.9099999999999681676854379475116729736328125"

Suggest a fix/enhancement

Prevent recursion when parsing floats during code generation. First level float values are correct in the resulting YAML, this only occurs if you provide example for nested items like above.

No source file or test is named. Start by reproducing the supplied Swagger YAML through the python-flask and go-server generators, then trace how nested examples are parsed and serialized. Done means the nested values remain 123.45 and 678.91 in the generated YAML without floating-point expansion.