standardize the naming of karmada secrets

[husnialhamdani]

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What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #6051

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[husnialhamdani]

actually, in this sub task we need to do just two things:

1. the yaml manifest of each component is listed in operator/pkg/controlplane/ directory, we shall improve the yaml manifest according to above example
2. the certificate is generated in NewCertTask and stored to secret in NewUploadCertsTask, we will rename the secret and the field according to above new naming convention.

Am I doing right, so far?
At least for point number 1

@chaosi-zju

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All modified and coverable lines are covered by tests ✅

Project coverage is 47.95%. Comparing base (3b6c0e0) to head (b82a6a2).

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@@            Coverage Diff             @@
##           master    #6178      +/-   ##
==========================================
- Coverage   47.95%   47.95%   -0.01%     
==========================================
  Files         674      674              
  Lines       55841    55841              
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- Hits        26781    26776       -5     
- Misses      27311    27315       +4     
- Partials     1749     1750       +1     

Flag	Coverage Δ
unittests	47.95% <ø> (-0.01%)	⬇️

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