[improve] [broker] Trigger offload on topic load

[hangc0276]

Fixes #xyz

Main Issue: #xyz

PIP: PIP-348

Motivation

Implement of PIP-348

Modifications

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

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

(or)

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

(or)

This change added tests and can be verified as follows:

(example:)

• 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:

If the box was checked, please highlight the changes

• 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

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[horizonzy]

LGTM.

[dao-jun]

close reopen to trigger ci workflow

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 70.57%. Comparing base (bbc6224) to head (580a422).
Report is 273 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #22652      +/-   ##
============================================
- Coverage     73.57%   70.57%   -3.00%     
+ Complexity    32624    32224     -400     
============================================
  Files          1877     1890      +13     
  Lines        139502   150413   +10911     
  Branches      15299    17744    +2445     
============================================
+ Hits         102638   106157    +3519     
- Misses        28908    35867    +6959     
- Partials       7956     8389     +433     

Flag	Coverage Δ
inttests	29.14% <80.00%> (+4.56%)	⬆️
systests	24.65% <75.00%> (+0.33%)	⬆️
unittests	70.74% <80.00%> (-2.10%)	⬇️

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

Files	Coverage Δ
...apache/bookkeeper/mledger/ManagedLedgerConfig.java	96.38% <100.00%> (+0.08%)	⬆️
...org/apache/pulsar/broker/ServiceConfiguration.java	98.49% <100.00%> (-0.90%)	⬇️
...rg/apache/pulsar/broker/service/BrokerService.java	69.97% <100.00%> (-10.81%)	⬇️
...che/bookkeeper/mledger/impl/ManagedLedgerImpl.java	70.23% <50.00%> (-10.43%)	⬇️
...kkeeper/mledger/impl/ManagedLedgerFactoryImpl.java	80.51% <0.00%> (-0.88%)	⬇️

... and 405 files with indirect coverage changes