add CA data to local up generated karmada config for enhanced security

[chaosi-zju]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Execute karmadactl token create command failed, because the cluster is set insecure-skip-tls-verify=true in karmada config, that is a insecure config.

So, this PR add CA data to local up generated karmada config for enhanced security.

Which issue(s) this PR fixes:

Fixes #5738

Special notes for your reviewer:

test report:

$ karmadactl token create --print-register-command --kubeconfig ~/.kube/karmada.config --karmada-context karmada-apiserver                                                                                
karmadactl register 172.18.0.4:5443 --token yqnbkt.muyyaah5omv1s24d --discovery-token-ca-cert-hash sha256:4f12a0f772cdaecfb7e150992f627485485d75922ddae5080bcb50a79bf22971

Does this PR introduce a user-facing change?:

NONE

[chaosi-zju]

@zhzhuang-zju

[zhzhuang-zju]

thanks
/lgtm
assign @RainbowMango

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.85%. Comparing base (f19a4b5) to head (7cbee99).
Report is 6 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5739      +/-   ##
==========================================
+ Coverage   40.63%   40.85%   +0.21%     
==========================================
  Files         650      651       +1     
  Lines       55184    55256      +72     
==========================================
+ Hits        22426    22574     +148     
+ Misses      31321    31241      -80     
- Partials     1437     1441       +4     

Flag	Coverage Δ
unittests	40.85% <ø> (+0.21%)	⬆️

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[zhzhuang-zju]

/approve
/hold if @RainbowMango has some comments

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zhzhuang-zju

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• hack/OWNERS [zhzhuang-zju]

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[zhzhuang-zju]

/hold cancel