Remove panic when metrics referee not configured properly

Steve Xuereb - Out of Office back 2026-01-05requested to merge
6183-kubernetes-executor-panics-when-no-referees-are-configured into master

What does this MR do?

Remove panic when metrics referee not configured properly

Why was this MR needed?

CreateReferees is returning a slice of Referee with nil values, causing build.go to still loop over a nil struct causing a panic.

Does this MR meet the acceptance criteria?

  • Documentation created/updated
  • Added tests for this feature/bug
  • In case of conflicts with master - branch was rebased

What are the relevant issue numbers?

Closes #6183 (closed)

Merge request reports