System metrics instrumentation not working with custom defined configuration

[rbagd]

System metric instrumentation is not functional if configuration on which metrics to be exported is explicitly provided. As a minimal example, this code

from opentelemetry.metrics import set_meter_provider
from opentelemetry.instrumentation.system_metrics import SystemMetricsInstrumentor
from opentelemetry.sdk.metrics import MeterProvider
from opentelemetry.sdk.metrics.export import (
    ConsoleMetricExporter,
    PeriodicExportingMetricReader,
)

exporter = ConsoleMetricExporter()
set_meter_provider(MeterProvider([PeriodicExportingMetricReader(exporter)]))

configuration = {
    "runtime.memory": ["rss", "vms"],
    "runtime.cpu.time": ["user", "system"],
}

SystemMetricsInstrumentor(config=configuration).instrument()

results in

Traceback (most recent call last):
  File ".../test.py", line 15, in <module>
    SystemMetricsInstrumentor(config=configuration).instrument()
  File ".../lib/python3.10/site-packages/opentelemetry/instrumentation/instrumentor.py", line 51, in __new__
    cls._instance = object.__new__(cls, *args, **kwargs)
TypeError: object.__new__() takes exactly one argument (the type to instantiate)

I am happy to look into fixing this. Removing *args and **kwargs in opentelemetry/instrumentation/instrumentor.py:51 actually solves the issue here but I'd like to understand the implications as this implies changing the interface class.