tracing fixed for apiserversource

[Shashankft9]

Fixes #
#1889

Proposed Changes

• just replicating an older fix mentioned in the issue, which was somehow lost while refactoring the code.
  more: Remove incorrect host names from tracing setup. #1990

Release Note

Fix availability of zipkin traces for APIServerSource

[knative-prow-robot]

Hi @Shashankft9. Thanks for your PR.

I'm waiting for a knative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Shashankft9]

cc @Harwayne

[codecov]

Codecov Report

Merging #4842 (49421ca) into master (152e608) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #4842   +/-   ##
=======================================
  Coverage   81.32%   81.32%           
=======================================
  Files         292      292           
  Lines        8322     8322           
=======================================
  Hits         6768     6768           
  Misses       1145     1145           
  Partials      409      409           

Impacted Files	Coverage Δ
pkg/adapter/v2/config.go	59.64% <100.00%> (ø)

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[tommyreddad]

/ok-to-test

[tommyreddad]

/lgtm

[Shashankft9]

hmm what more do we need to send this through?

[pierDipi]

/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pierDipi, Shashankft9

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[pierDipi]

@Shashankft9 can you add a release note?
/kind bug