Expose containing port of serving metrics

[wangxf1987]

…posed, but other componment is not.

What type of PR is this?

This is improve for installation, the port of karmada-apiserver is exposed, but other componment is not.

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Expose the default port  for the karmada-controller-manager, scheduler and agent when creating a PodMonitor.

[wangxf1987]

There is old conversation in the #4877

[codecov-commenter]

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All modified and coverable lines are covered by tests ✅

Project coverage is 28.21%. Comparing base (cc7b9ac) to head (e63349d).
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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5139      +/-   ##
==========================================
- Coverage   28.21%   28.21%   -0.01%     
==========================================
  Files         632      632              
  Lines       43571    43568       -3     
==========================================
- Hits        12293    12292       -1     
+ Misses      30382    30379       -3     
- Partials      896      897       +1     

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unittests	28.21% <ø> (-0.01%)	⬇️

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[RainbowMango]

cc @chaosi-zju

Please help to check:

• If any other component need to set container port names
• If anywhere else, like karmadactl init, operator, local-up, need this

[chaosi-zju]

If any other component need to set container port names

it seems there are also karmada-webhook and karmada-operator need to set container port names.

If anywhere else, like karmadactl init, operator, local-up, need this

I think karmadactl init, karmada-operator and local-up installation method also need this.

[chaosi-zju]

If any other component need to set container port names

it seems there are also karmada-webhook and karmada-operator need to set container port names.

sorry, actually descheduler and scheduler-estimator also need to set container names.

CC @RainbowMango

[RainbowMango]

@chaosi-zju Please help to open an issue to track the rest tasks, and then we can move this forward.

[chaosi-zju]

Please help to open an issue to track the rest tasks, and then we can move this forward.

done, #5166

[RainbowMango]

/lgtm
/approve

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