Fix Docker ulimit validation warning
requested to merge 36049-gitlab-runner-16-2-0-jsonschema-runners-0-docker-ulimit-does-not-validate-expected-object-but into main
What does this MR do?
Adds omitempty to the ulimit json field to fix #36049 (closed).
Why was this MR needed?
json schema validation tool expects an object for non-scaler types unless omitempty is present in the json tag.
What's the best way to test this MR?
N/A
What are the relevant issue numbers?
Closes #36049 (closed)