Reset cluster related stats in CONFIG RESETSTATS

[withRiver]

Previously CONFIG RESETSTATS only resets the slot statistics in
cluster part, this PR makes it reset cluster bus messages at well.
Additionally, we also reset stat_cluster_links_buffer_limit_exceeded.

Now we will reset:

• cluster_stats_messages_sent*
• cluster_stats_messages_received*
• total_cluster_links_buffer_limit_exceeded

Closes #2439.

[enjoy-binbin]

please also take a look at https://github.com/valkey-io/valkey/blob/unstable/CONTRIBUTING.md and sign the DOC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.55%. Comparing base (70d336d) to head (331310b).
⚠️ Report is 4 commits behind head on unstable.

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #2458      +/-   ##
============================================
- Coverage     71.58%   71.55%   -0.03%     
============================================
  Files           125      125              
  Lines         69214    69218       +4     
============================================
- Hits          49545    49531      -14     
- Misses        19669    19687      +18     

Files with missing lines	Coverage Δ
src/cluster.c	90.43% <100.00%> (+0.05%)	⬆️

... and 13 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[withRiver]

@enjoy-binbin @sarthakaggarwal97
Thanks!! I have modified the code according to your suggestions and sign the DOC in my latest commit message.

[ranshid]

and sign the DOC in my latest commit message.

@withRiver, unfortunately even though we squash all commits before merging the DCO check will verify all the commits in this PR are signed. you can probably do a git rebase --signoff HEAD~3 or manually rebase and edit the relevant commits massage.

[withRiver]

Sorry. I have added DCO signature to all my commits now.

[ranshid]

LGTM

[enjoy-binbin]

@valkey-io/core-team This is a minor change, please take a look at the top comment and approve.

[zuiderkwast]

Approving the behavior change. I didn't review the code.

[sarthakaggarwal97]

Thanks @withRiver!

[hpatro]

Looks good to me. Just checked new slot migration code, it has different mechanism to maintain/cleanup the finished slot migration operation, so we can avoid that here I guess.