Enabling rocksdb metrics logger in simulation.

[neethuhaneesha]

Enabling rocksdb metrics logger in simulation.

Code-Reviewer Section

The general guidelines can be found here.

Please check each of the following things and check all boxes before accepting a PR.

• The PR has a description, explaining both the problem and the solution.
• The description mentions which forms of testing were done and the testing seems reasonable.
• Every function/class/actor that was touched is reasonably well documented.

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If this PR is made against a release-branch, please also check the following:

• This change/bugfix is a cherry-pick from the next younger branch (younger release-branch or master if this is the youngest branch)
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[foundationdb-ci]

AWS CodeBuild CI Report for Linux CentOS 7

• CodeBuild project: foundationdb-pr
• Commit ID: d23b864
• Result: SUCCEEDED
• Error: N/A
• Build Logs (available for 30 days)

[liquid-helium]

Update with Joshua tests?

[neethuhaneesha]

Update with Joshua tests?

20211207-232409-neethuhaneeshabingi-7a85912be2db42ef compressed=True data_size=28144398 duration=7790146 ended=100000 fail=2 fail_fast=10 max_runs=100000 pass=99998 priority=100 remaining=0 runtime=1:01:25 sanity=False started=100298 stopped=20211208-002534 submitted=20211207-232409 timeout=5400 username=neethuhaneeshabingi

These two failures are existing failures, irrespective of the change.