cleanup: enable revive(var-naming rule) checking

[jwcesign]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
cleanup: enable revive(var-naming rule) checking

Which issue(s) this PR fixes:
Part of #4490

Special notes for your reviewer:
none

Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (d10b6d8) 51.87% compared to head (947a80e) 51.85%.

Files	Patch %	Lines
pkg/util/proxy/upgrade_dialer.go	0.00%	2 Missing ⚠️
...ependenciesdistributor/dependencies_distributor.go	0.00%	1 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4496      +/-   ##
==========================================
- Coverage   51.87%   51.85%   -0.02%     
==========================================
  Files         243      243              
  Lines       24183    24183              
==========================================
- Hits        12545    12541       -4     
- Misses      10958    10961       +3     
- Partials      680      681       +1     

Flag	Coverage Δ
unittests	51.85% <0.00%> (-0.02%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[RainbowMango]

/lgtm
/approve

/hold
Please feel free to unhold after #4492, I'm afraid there is another conflict.

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [RainbowMango]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[RainbowMango]

/lgtm

[RainbowMango]

/hold cancel