[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

Merging #6348 (7fd86b0) into develop (fac699e) will increase coverage by 0.01%.
The diff coverage is 26.82%.

@@              Coverage Diff              @@
##             develop    #6348      +/-   ##
=============================================
+ Coverage      43.01%   43.03%   +0.01%     
- Complexity      8892     8896       +4     
=============================================
  Files           1103     1103              
  Lines          77763    77801      +38     
  Branches       10126    10128       +2     
=============================================
+ Hits           33453    33482      +29     
- Misses         40118    40130      +12     
+ Partials        4192     4189       -3     

Impacted Files	Coverage Δ
.../apache/rocketmq/controller/ControllerManager.java	49.27% <25.00%> (-8.31%)	⬇️
...he/rocketmq/broker/controller/ReplicasManager.java	44.54% <100.00%> (ø)

... and 25 files with indirect coverage changes

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