[improve][cli] Supports creating tokens with additional headers

[coderzc]

Motivation

Currently, the tool that generates the token cannot attach headers. We should support it. For example, it makes sense to attach a kid field for JWKS.

Modifications

Supports creating tokens with additional headers

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:

[nodece]

/pulsarbot rerun-failure-checks

[Technoboy-]

@lhotari @heesung-sn Could you help take a look ?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.16%. Comparing base (bbc6224) to head (aef7cfc).
Report is 281 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #22690      +/-   ##
============================================
- Coverage     73.57%   73.16%   -0.41%     
- Complexity    32624    32849     +225     
============================================
  Files          1877     1889      +12     
  Lines        139502   141401    +1899     
  Branches      15299    15517     +218     
============================================
+ Hits         102638   103457     +819     
- Misses        28908    29937    +1029     
- Partials       7956     8007      +51     

Flag	Coverage Δ
inttests	27.43% <0.00%> (+2.85%)	⬆️
systests	24.75% <0.00%> (+0.42%)	⬆️
unittests	72.15% <100.00%> (-0.69%)	⬇️

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

Files	Coverage Δ
...ar/broker/authentication/utils/AuthTokenUtils.java	77.27% <100.00%> (+1.08%)	⬆️
...pache/pulsar/utils/auth/tokens/TokensCliUtils.java	39.28% <100.00%> (+11.42%)	⬆️

... and 371 files with indirect coverage changes