[ISSUE #6346] Support asynchronously notify brokers when their roles has been changed

[TheR1sing3un]

1. support asynchronous notify brokers when roles changed

Make sure set the target branch to develop

What is the purpose of the change

fix #6346

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 26.82927% with 30 lines in your changes missing coverage. Please review.

Project coverage is 43.00%. Comparing base (fac699e) to head (c11d63a).
Report is 656 commits behind head on develop.

Files with missing lines	Patch %	Lines
.../apache/rocketmq/controller/ControllerManager.java	25.00%	29 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #6348      +/-   ##
=============================================
- Coverage      43.01%   43.00%   -0.02%     
- Complexity      8892     8895       +3     
=============================================
  Files           1103     1103              
  Lines          77763    77839      +76     
  Branches       10126    10134       +8     
=============================================
+ Hits           33453    33477      +24     
- Misses         40118    40168      +50     
- Partials        4192     4194       +2     

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