[feat][broker] PIP-321 Introduce allowed-cluster at the namespace level

[liangyepianzhou]

PIP: #21648

Motivation

Because the configurations of clusters at the namespace level are unclear, some flexible topic policies can not work as expected, e.g. geo-replication at the topic level.

Modifications

Use replication-clusters, allowed-clusters to replace a single replication-clusters originally in the namespace policy.

Verifying this change

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This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

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• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

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Matching PR in forked repository

PR in forked repository:

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.12397% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 73.24%. Comparing base (bbc6224) to head (44d0fc1).
Report is 303 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #22378      +/-   ##
============================================
- Coverage     73.57%   73.24%   -0.34%     
- Complexity    32624    32642      +18     
============================================
  Files          1877     1890      +13     
  Lines        139502   141584    +2082     
  Branches      15299    15534     +235     
============================================
+ Hits         102638   103702    +1064     
- Misses        28908    29888     +980     
- Partials       7956     7994      +38     

Flag	Coverage Δ
inttests	27.45% <19.83%> (+2.87%)	⬆️
systests	24.62% <12.39%> (+0.29%)	⬆️
unittests	72.27% <85.12%> (-0.58%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...ava/org/apache/pulsar/client/admin/Namespaces.java	66.66% <ø> (ø)
...e/pulsar/client/admin/internal/NamespacesImpl.java	97.67% <100.00%> (+2.22%)	⬆️
...ava/org/apache/pulsar/admin/cli/CmdNamespaces.java	79.11% <100.00%> (+0.38%)	⬆️
...apache/pulsar/common/policies/data/PolicyName.java	100.00% <100.00%> (ø)
...g/apache/pulsar/common/policies/data/Policies.java	56.98% <33.33%> (-0.16%)	⬇️
.../org/apache/pulsar/broker/admin/v2/Namespaces.java	91.39% <82.35%> (+22.29%)	⬆️
...sar/broker/service/persistent/PersistentTopic.java	79.32% <89.65%> (+0.86%)	⬆️
...rg/apache/pulsar/broker/web/PulsarWebResource.java	64.40% <42.85%> (+0.36%)	⬆️
...pache/pulsar/broker/admin/impl/NamespacesBase.java	76.78% <86.66%> (+3.70%)	⬆️

... and 360 files with indirect coverage changes

[Demogorgon314]

@gaoran10 @Technoboy- Please help review this PR.