feat: support yurtadm config command

[YTGhost]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1536

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

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In response to this:

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1536

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

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[openyurt-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov]

Codecov Report

Merging #1709 (df23e8c) into master (f782021) will decrease coverage by 0.04%.
Report is 1 commits behind head on master.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1709      +/-   ##
==========================================
- Coverage   51.64%   51.61%   -0.04%     
==========================================
  Files         168      169       +1     
  Lines       20063    20073      +10     
==========================================
- Hits        10362    10360       -2     
- Misses       8716     8727      +11     
- Partials      985      986       +1     

Flag	Coverage Δ
unittests	51.61% <0.00%> (-0.04%)	⬇️

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

Files Changed	Coverage Δ
pkg/yurtadm/util/cmdutil.go	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

[YTGhost]

@rambohe-ch PTAL

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
5.2% Duplication

Catch issues before they fail your Quality Gate with our IDE extension SonarLint

[YTGhost]

@rambohe-ch PTAL

[rambohe-ch]

/lgtm