attributes:
  metadata:
    label: "Keystone settings (NOTE: Requires detach-database plugin!!!)"
    weight: 90
  yaml_additional_config:
    type: "textarea"
    weight: 52
    value: |
      foo: bar
    label: "Additional config"
    description: "Just put here valid yaml" 

attributes:
  metadata:
    label: "Keystone settings (NOTE: Requires detach-database plugin!!!)"
    weight: 90
  yaml_additional_config:
    type: "textarea"
    weight: 52
    value: |
      foo: bar
    label: "Additional config"
    description: "Just put here valid yaml"
    regex:
      source: '.+'
      error: "This field should not be empty"

Add validation on emptyness of additional config
Add validation on emptyness of additional config

- We need to validate additional config textarea
on empty values

Change-Id: I596f52b5812367a44ab40920c9fd41221cab2f99
Related-Bug: #1488455
