BREAKING: Convert the process collector to use perflib #489
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This PR converts the process collector to use perflib rather than WMI. Without filters, it speeds up collection on my machine by 10-50x.
However, since the current implementation has filtering based on WQL, which we cannot support for perflib, this is a breaking change. I changed the flags to match what we have in eg
logical_disk
, with regexp white/blacklists.