refactor ServiceInstancesChangedListener equals and hashcode method

[finefuture]

What is the purpose of the change

The uniqueness of ServiceInstancesChangedListener should not be determined by listeners, because listeners is variable object, the same ServiceInstancesChangedListener object will be repeatedly added to the listener list, just use provider appname.

Brief changelog

Verifying this change

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Checklist

• Make sure there is a GitHub_issue field for the change (usually before you start working on it). Trivial changes like typos do not require a GitHub issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
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[codecov-commenter]

Codecov Report

Merging #12547 (a682acb) into 3.2 (2c82cf7) will decrease coverage by 0.38%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                3.2   #12547      +/-   ##
============================================
- Coverage     69.73%   69.36%   -0.38%     
+ Complexity      318        2     -316     
============================================
  Files          3481     1629    -1852     
  Lines        164990    67327   -97663     
  Branches      27746     9880   -17866     
============================================
- Hits         115061    46699   -68362     
+ Misses        39959    16107   -23852     
+ Partials       9970     4521    -5449     

see 1883 files with indirect coverage changes

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[AlbumenJ]

@chickenlj PTAL

[AlbumenJ]

@CrazyHZM

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

80.0% Coverage
0.0% Duplication