Add stats to statsd storage

[piowag]

Add stats to stdout storage: memory, hugetlb, perf, resctrl, referenced memory

[k8s-ci-robot]

Hi @piowag. Thanks for your PR.

I'm waiting for a google member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[dashpole]

/ok-to-test

[dashpole]

Same comment copied from the other PR:

This looks good. Do you think we have enough metrics here where we need to start respecting --ignore-metrics? I believe the current PR will just have zero values for disabled metrics, which is acceptable, but adds to the load for any backends that process the data.

[katarzyna-z]

Same comment copied from the other PR:

This looks good. Do you think we have enough metrics here where we need to start respecting --ignore-metrics? I believe the current PR will just have zero values for disabled metrics, which is acceptable, but adds to the load for any backends that process the data.

I think that it will be good to start respecting disable_metrics parameter also for other storages than Prometheus. My only doubt is how to clearly inform users about these changes. If we start now, for some of storages disable_metrics will be respected, for others will not be respected.
Maybe it will be good to add this information to description in help, for example:

-disable_metrics metrics
        comma-separated list of metrics to be disabled. Parameter is used by Prometheus and statsd storages. Options are 'accelerator', 'cpu_topology','disk', 'diskIO', 'network', 'tcp', 'udp', 'percpu', 'sched', 'process', 'hugetlb', 'referenced_memory', 'resctrl'. (default tcp,advtcp,sched,udp,process,hugetlb,referenced_memory,cpu_topology,resctrl)

[dashpole]

+1 to updating the flag description. If you'd prefer, we can only gate the new metrics with the respective disable_metric.

[dashpole]

lgtm