This is part of the infrastructure buildup for Cells v2 which is
priority work in Kilo. It is needed to get closer to a working cellsv2
This work is focused on methods for populating the instance_mapping
table with data about current instances. It is an important piece of
the migration path to cells v2 so being able to continue working on it
this cycle will help keep momentum on the cells v2 effort. Thanks.
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