给定以下azkaban配置，该配置有1个包含3个作业的流，如何在默认情况下禁用job2？有参数/配置吗？
我知道我可以进入ui并手动禁用作业。但是，我希望在默认情况下禁用job2，并可能仅在需要时从ui启用它。

hadoop {

  def input = "..."

  workflow('MyWorkflow') {

    hadoopJavaJob('Job1') {
      uses 'my.package.Job1Runner'

      reads files: [ ... ]
      writes files: [ ... ]
    }

    hadoopJavaJob('Job2') {
      uses 'my.package.Job2Runner'
      depends 'Job1'

      reads files: [ ... ]
      writes files: [ ... ]
    }

    hadoopJavaJob('Job3') {
      uses 'my.package.Job3Runner'
      depends 'Job2'

      reads files: [ ... ]
      writes files: [ ... ]
    }

    targets 'Job3'
  }
}