[fix][client] Fix update response body text

[tuteng]

Fixes #xyz

Master Issue: #xyz

Motivation

When using pulsar-admin and encountering an exception, first check the body, then check the http text

Modifications

• Update http response body check

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
• Anything that affects deployment

Documentation

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

Matching PR in forked repository

PR in forked repository: AmateurEvents#31

[github-actions]

@tuteng Please add the following content to your PR description and select a checkbox:

- [ ] `doc` <!-- Your PR contains doc changes -->
- [ ] `doc-required` <!-- Your PR changes impact docs and you will update later -->
- [ ] `doc-not-needed` <!-- Your PR changes do not impact docs -->
- [ ] `doc-complete` <!-- Docs have been already added -->

[mattisonchao]

LGTM, We need to see if we break unit test.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 37.78%. Comparing base (99e26f5) to head (63e4b48).
⚠️ Report is 3201 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #18794      +/-   ##
============================================
- Coverage     44.79%   37.78%   -7.02%     
+ Complexity    10026     8041    -1985     
============================================
  Files           703      703              
  Lines         68808    68851      +43     
  Branches       7375     7382       +7     
============================================
- Hits          30822    26014    -4808     
- Misses        34378    39428    +5050     
+ Partials       3608     3409     -199     

Flag	Coverage Δ
unittests	37.78% <ø> (-7.02%)	⬇️

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[Jason918]

When using pulsar-admin and encountering an exception, first check the body, then check the http text

Can you give an actual case this PR is solving?

[tuteng]

When using pulsar-admin and encountering an exception, first check the body, then check the http text

Can you give an actual case this PR is solving?

https://github.com/apache/pulsar/blob/master/pulsar-broker/src/main/java/org/apache/pulsar/broker/web/ExceptionHandler.java#L46

This needs an interceptor and then throws an exception with a custom message, using pulsar-admin to execute the corresponding command, which never gets the custom message @Jason918

[mattisonchao]

Oops. Could you help to take a look? I am not sure if it is a sensitive breaking change for users.

@codelipenghui @eolivelli @Technoboy- @Jason918