spoke token controller unit test fix along with app addon ns customiz…

[xiangjingli]

…ation

• I have taken backward compatibility into consideration.

The spoke token controller unit test is fixed due to the unit test failure observed in the midstream repo, where the unit test is executed inside of a k8s pod in Prow CI/CD env. Its pod namespace is shared with the unit test job. So the SA in the unit test is actually created in the unit test k8s pod NS.

Though the unit test failure doesn't happen in upstream repo as upstream CI/CD is github workflow rather than the k8s Prow, It is better to merge it back to upstream to keep the code consistency.

[openshift-ci]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.52%. Comparing base (f9dc1e6) to head (085d055).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #398      +/-   ##
==========================================
+ Coverage   56.21%   56.52%   +0.30%     
==========================================
  Files          68       68              
  Lines       15191    15191              
==========================================
+ Hits         8539     8586      +47     
+ Misses       5795     5754      -41     
+ Partials      857      851       -6     

Flag	Coverage Δ
unit	56.52% <ø> (+0.30%)	⬆️

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