refactor yurtadm join

[YTGhost]

Signed-off-by: HIHIA 283304489@qq.com

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What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #889

Special notes for your reviewer:

/assign @rambohe-ch

Does this PR introduce a user-facing change?

other Note

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In response to this:

Signed-off-by: HIHIA 283304489@qq.com

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #889

Special notes for your reviewer:

/assign @rambohe-ch

Does this PR introduce a user-facing change?

other Note

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[codecov]

Codecov Report

Merging #1049 (73b3903) into master (c3a7eaa) will increase coverage by 0.57%.
The diff coverage is 51.72%.

@@            Coverage Diff             @@
##           master    #1049      +/-   ##
==========================================
+ Coverage   49.46%   50.04%   +0.57%     
==========================================
  Files          96       96              
  Lines       13056    12841     -215     
==========================================
- Hits         6458     6426      -32     
+ Misses       6061     5879     -182     
+ Partials      537      536       -1     

Flag	Coverage Δ
unittests	50.04% <51.72%> (+0.57%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...kg/util/kubernetes/kubeadm/app/preflight/checks.go	0.00% <ø> (ø)
...bernetes/kubeadm/app/util/apiclient/idempotency.go	24.81% <ø> (+8.94%)	⬆️
...ubernetes/kubeadm/app/util/runtime/runtime_unix.go	100.00% <ø> (ø)
pkg/yurtadm/util/pubkeypin/pubkeypin.go	77.55% <ø> (ø)
pkg/yurtadm/util/edgenode/edgenode.go	9.02% <16.66%> (ø)
pkg/yurtadm/util/kubeconfig/kubeconfig.go	55.76% <55.76%> (ø)
pkg/util/iptables/iptables.go	87.67% <0.00%> (+0.54%)	⬆️

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[rambohe-ch]

@Congrool @donychen1134 PTAL

[rambohe-ch]

please use the official link: https://dl.k8s.io/release/${RELEASE}/bin/linux/${ARCH}/{kubeadm,kubelet} to download kubelet and kubeadm binary files.

reference link: https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/

[rambohe-ch]

@YTGhost how about make pkg/yurtadm/util folder more clearly in Yurtadm join refactor.

[YTGhost]

@rambohe-ch PTAL

[YTGhost]

@rambohe-ch PTAL

[rambohe-ch]

/lgtm
/approve

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rambohe-ch, YTGhost

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