fixes #2225

[antoniomerlin]

By providing default ingressClass using detectDefaultIngressClass func updated API call to use client.Reader instead of client.Client

Which problem is this PR solving?

• Resolve #2225

Description of the changes

• detectDefaultIngressClass func updated API call to use client.Reader instead of client.Client

How was this change tested?

• By running TestDetectDefaultIngressClass in autodetect/main_test.go

Checklist

• [x] I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• [x] I have signed all commits
• [ ] I have added unit tests for the new functionality
• [x] I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.71%. Comparing base (70e511a) to head (f82e648).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2622   +/-   ##
=======================================
  Coverage   87.71%   87.71%           
=======================================
  Files         102      102           
  Lines        7308     7308           
=======================================
  Hits         6410     6410           
  Misses        701      701           
  Partials      197      197           

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[iblancasa]

Thanks for your contribution! Can you create a test?

[antoniomerlin]

Hi, @iblancasa test is already preset in pkg/autodetect/main_test.go and its working. Do i need to add anything else ?

[iblancasa]

I was thinking more about an E2E test or adding a new test. If after the change, none of the tests are modified it means we are not checking for the correct result.