Refactor YAML indentation for consistency

What does this MR do?

Refactors indentation to be consistent in a YAML file on a single line.

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion.

Required

• Merge Request Title and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes

  Not needed (I think).

• Documentation created/updated

  Not needed (I think).

• Tests added

  Not needed (I think).

• Integration tests added to GitLab QA

  Not needed (I think).

• Equivalent MR/issue for omnibus-gitlab opened

  Not needed (I think).