fix: wait for pulsar proper startup

[atzoum]

Description

Pulsar's health check has been rewritten to ensure the default tenant/namespace is ready to receive read and write requests before the container is judged to be ready.

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -2.04 ⚠️

Comparison is base (e7afeb1) 78.42% compared to head (ace24f0) 76.38%.

❗ Current head ace24f0 differs from pull request most recent head 1b8e473. Consider uploading reports for the commit 1b8e473 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #17      +/-   ##
==========================================
- Coverage   78.42%   76.38%   -2.04%     
==========================================
  Files          37       41       +4     
  Lines        2725     2837     +112     
==========================================
+ Hits         2137     2167      +30     
- Misses        487      564      +77     
- Partials      101      106       +5     

Impacted Files	Coverage Δ
testhelper/docker/resource/pulsar.go	61.22% <100.00%> (ø)

... and 3 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.