Fix log syntax for KubernetesTaskRunner

[georgew5656]

Since this function (deletePeonJobs) is deleting jobs and not tasks (doesn't make sense to delete tasks from k8s), we should log accordingly.

Description

Make debugging the KubernetesTaskRunner easier.

Release note

Cleanup some logs in the KubernetesTaskRunner for easier debugging.

Key changed/added classes in this PR

• KubernetesPeonClient

This PR has:

• been self-reviewed.
  • using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.