Add chain ID status to fleetautoscaler event logger

[indexjoseph]

Is your feature request related to a problem? Please describe.

Update the fleetautoscaler controller to log events for the chainpolicy - Would like to be able to see the chain id attached to the event that finally gets applied on change in one of the columns, then at least we'd know which chain entry was eventually applied.

Maybe in the from section, something like: fleet-controller:chain:1

Additional context
Related to #3008