[fix][broker] Immediately tombstone Deleted and Free state bundles

[heesung-sn]

Motivation

• Extensible Load Balancer cannot split bundles when a namespace is recreated. The old parent bundle before split (in the Deleted state) could block the next split operation until they are tombstoned by the leader monitor bundle cleanup job.

• Extensible Load Balancer delays bundle cleanups when a namespace is deleted. Those deleted bundles are stuck in Free state until they are tombstoned by the leader monitor bundle cleanup job. Although this delayed tombstone was introduced for non-transfer unloading, these lingering bundles are not ideal when the namespace is deleted.

Modifications

• Immediately tombstone Deleted state bundles
• Set ServiceUnitStateData.force=true when deleting(unloading) namespace bundles. Then, immediately tombstone Free state bundles if force is true.

Verifying this change

• Make sure that the change passes the CI checks.

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: heesung-sn#67

[Demogorgon314]

LGTM.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.20%. Comparing base (bbc6224) to head (4dcd4ac).
Report is 293 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #22743      +/-   ##
============================================
- Coverage     73.57%   73.20%   -0.38%     
+ Complexity    32624    32577      -47     
============================================
  Files          1877     1889      +12     
  Lines        139502   141433    +1931     
  Branches      15299    15520     +221     
============================================
+ Hits         102638   103531     +893     
- Misses        28908    29905     +997     
- Partials       7956     7997      +41     

Flag	Coverage Δ
inttests	27.48% <15.78%> (+2.90%)	⬆️
systests	24.68% <0.00%> (+0.35%)	⬆️
unittests	72.21% <100.00%> (-0.64%)	⬇️

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

Files	Coverage Δ
...dbalance/extensions/ExtensibleLoadManagerImpl.java	81.34% <100.00%> (+1.25%)	⬆️
...xtensions/channel/ServiceUnitStateChannelImpl.java	85.33% <100.00%> (+0.02%)	⬆️
...r/loadbalance/extensions/manager/SplitManager.java	91.48% <100.00%> (+2.12%)	⬆️
.../loadbalance/extensions/manager/UnloadManager.java	86.79% <100.00%> (-0.97%)	⬇️
...ache/pulsar/broker/namespace/NamespaceService.java	73.58% <100.00%> (+1.35%)	⬆️

... and 350 files with indirect coverage changes