HPCC-30854 Ensure partitioning of KJ parts between workers in k8s

[jakesmith]

When mapping index parts to workers in containerized, treat all as if locally available, such that they will be round-robined into worker buckets. This will cause (when the default remoteKeyedLookup is true), workers to directly access a partition of the index parts and farm out request of the rest to other workers. The net result is to increase cache locality (both jhtree and within the Linux page cache).

Also make some detailed logging conditional on logging level.

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[github-actions]

https://track.hpccsystems.com/browse/HPCC-30854
Jira updated