- migr_conn_info: {}
  writer_fails: true
  validates_conn_info: false
  marshals_conn_info: false

- migr_conn_info: {}
  writer_fails: false
  validates_conn_info: false
  marshals_conn_info: false

- migr_conn_info:
    additional_key: value1
  writer_fails: false
  validates_conn_info: true
  marshals_conn_info: false

- migr_conn_info:
    additional_key: value1
    connection_details:
      user: ubuntu
      password: S3kr3t
  writer_fails: false
  validates_conn_info: true
  marshals_conn_info: true
