Add knobs for min/max Ratekeeper limit [release-7.1]

[jzhou77]

Cherrypick #7819

The default has no effects.

Code-Reviewer Section

The general pull request 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.

For Release-Branches

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 main if this is the youngest branch)
• There is a good reason why this PR needs to go into a release branch and this reason is documented (either in the description above or in a linked GitHub issue)

[foundationdb-ci]

Result of foundationdb-pr-cluster-tests on Linux CentOS 7

• Commit ID: 1de1171
• Duration 0:09:56
• Result: ❌ FAILED
• Error: reference not found for primary source and source version 1de11719fb9de251e1f891de2ebbc3fd2b1c74f6
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-macos on macOS BigSur 11.5.2

• Commit ID: 1de1171
• Duration 0:10:09
• Result: ❌ FAILED
• Error: reference not found for primary source and source version 1de11719fb9de251e1f891de2ebbc3fd2b1c74f6
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr on Linux CentOS 7

• Commit ID: 1de1171
• Duration 0:12:28
• Result: ❌ FAILED
• Error: reference not found for primary source and source version 1de11719fb9de251e1f891de2ebbc3fd2b1c74f6
• Build Logs (available for 30 days)

[fdb-windows-ci]

Doxense CI Report for Windows 10

• Commit ID: e202a39
• Result: ✔️ SUCCEEDED
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr on Linux CentOS 7

• Commit ID: e202a39
• Duration 1:07:24
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-cluster-tests on Linux CentOS 7

• Commit ID: e202a39
• Duration 1:19:08
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Logs (available for 30 days)