improve DLB reporting in GPU-residen runs
Summary
In several use-cases with GPU resident runs measuring load balance is not possible, but we still report load based on data that is not representative.
Use cases
It will avoid suggesting that there is load imbalance that the user can do something about.
Impact
Users.
Detailed description
A new DLB state set to "notsupported" can indicate that DLB is not active because it is not supported and therefore log reporting of statistics can report more accurate reasons on what is happening during the run.