Comment 10 for bug 1473452

Verified on the Fuel 8.0 #134 ISO

Steps used for verify:
1) Install Fuel master node
2) Install sample plugin (attached)
3) Make changes at the plugins directory on the master node at the file /var/www/nailgun/plugins/<plugin_name>/environment_config.yaml:
use this config:
attributes:
  fuel-plugin-test-generators_password:
    weight: 10
    label: 'Field for testing autogenerated values'
    type: "textarea"
    value:
      generator: "password"
4) Save changes.
5) Change MOS supported version at /var/www/nailgun/plugins/<plugin_name>/metadata.yaml:
use:
fuel_version: ['8.0']
releases:
  - os: ubuntu
    version: 2015.1.0-7.0
    mode: ['ha', 'multinode']
    deployment_scripts_path: deployment_scripts/
    repository_path: repositories/ubuntu
  - os: ubuntu
    version: 2015.1.0-8.0
    mode: ['ha', 'multinode']
    deployment_scripts_path: deployment_scripts/
    repository_path: repositories/ubuntu
6) Save changes
7) Create a new environment
8) Go to the Settings tab, there should be Testing subtab

Actual result:
There is a "Field for testing autogenerated values" label with auto generated password at the text field