[HTML] If top level element is in array inside model object, static html generator is not generating model body

Description

If top level element is an array inside model, model object is generated as empty.

Swagger-codegen version

2.2.3

Swagger declaration file content or url

{
  "swagger":"2.0",
  "definitions": {
    "nls_1.0_deploymentContainers": {
      "items": {
        "type": "string"
      }, 
      "type": "array"
    }
  }, 
  "paths": {
    "/test": {
      "get": {
        "responses": {
          "200": {
            "description": "Accepted", 
            "schema": {
              "$ref": "#/definitions/nls_1.0_deploymentContainers"
            }
          }
		}
      }
    }
  }
}

Command line used for generation

swagger-codegen generate -l html -i

Steps to reproduce

Just use above command.

Related issues/PRs

Suggest a fix/enhancement

In DefaultCodegen.class:1305 we need to add values to m.vars variable.

Start with DefaultCodegen.class around line 1305 and reproduce the issue using the supplied Swagger JSON and the swagger-codegen generate -l html command. Trace how the array definition affects m.vars; done means the generated HTML model body is populated rather than empty.