message: add syncJobStreams to package-2018-01-preview
diff: @@ -117,6 +117,7 @@ input-file:
  - Microsoft.Automation/preview/2017-05-15-preview/softwareUpdateConfigurationMachineRun.json
  - Microsoft.Automation/preview/2017-05-15-preview/sourceControl.json
  - Microsoft.Automation/preview/2017-05-15-preview/sourceControlSyncJob.json
  +- Microsoft.Automation/preview/2017-05-15-preview/sourceControlSyncJobStreams.json
  - Microsoft.Automation/preview/2017-05-15-preview/job.json
  - Microsoft.Automation/stable/2018-01-15/definitions.json
  - Microsoft.Automation/stable/2018-01-15/dscNode.json
  