Preserve Spaces or Indents

[ric-evans]

          detect if using spaces or indents, and use those. See [Observation-Management-Service/ewms-workflow-management-service@`95caf28` (#19)](https://github.com/Observation-Management-Service/ewms-workflow-management-service/pull/19/commits/95caf281f2449f366e8ab83885c9aa97130281ce)

Originally posted by @ric-evans in #58 (comment)