Issue #7258
The ratekeeper is recording the busiest write tag for *all* storage
servers, which throttles the traceevent. Distribute the busiest write
tag to corresponding storage servers should reduces this throttling
issue.
* proof of concept
* use code-probe instead of test
* code probe working on gcc
* code probe implemented
* renamed TestProbe to CodeProbe
* fixed refactoring typo
* support filtered output
* print probes at end of simulation
* fix missed probes print
* fix deduplication
* Fix refactoring issues
* revert bad refactor
* make sure file paths are relative
* fix more wrong refactor changes
