Provide a way to disable metrics logs in simulation

When debugging timeouts in simulation, the trace log file contains a lot of repeated metrics loggings, like `ProcessMetrics` or `MachineMetrics`, that in most cases would lower the signal to noise ratio a lot. By providing a way to disable metrics logs in simulation, it's easier to locate the phase where the code got stuck by reading the trace files.

Maybe we can simply add a new server knob that could be set via the simulation start command that would basically disable the `systemMonitor()` call done in `workerServer()` if the program is in simulated mode.

Start at the workerServer() path and inspect the systemMonitor() call when the program is in simulated mode. Trace how simulation start-command server knobs are defined and passed through. Done means a simulation option suppresses ProcessMetrics and MachineMetrics trace logging without changing normal-mode monitoring; verify with the relevant simulation trace output.

Written by the indexing model from the issue text.