bump k8s to 0.27.4 and golang to 1.20

[zhujian7]

This PR resolved the conflicts of #66, and fixed the unit tests based on kubernetes-sigs/controller-runtime#2259
@clyang82, please help review

[zhujian7]

cc @elgnay @qiujian16

[codecov]

Codecov Report

Patch coverage: 57.14% and project coverage change: +0.78% 🎉

Comparison is base (632006c) 80.52% compared to head (70219f4) 81.31%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #73      +/-   ##
==========================================
+ Coverage   80.52%   81.31%   +0.78%     
==========================================
  Files           5        5              
  Lines         416      412       -4     
==========================================
  Hits          335      335              
+ Misses         64       60       -4     
  Partials       17       17              

Flag	Coverage Δ
unit	81.31% <57.14%> (+0.78%)	⬆️

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

Files Changed	Coverage Δ
pkg/addon/agent/controller/token.go	71.42% <0.00%> (+0.72%)	⬆️
.../commoncontroller/ephemeral_identity_controller.go	71.73% <0.00%> (+2.98%)	⬆️
pkg/controllers/event/secret.go	100.00% <100.00%> (ø)
pkg/controllers/event/serviceaccount.go	100.00% <100.00%> (ø)

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

[qiujian16]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiujian16, zhujian7

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 [qiujian16]

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

[clyang82]

/lgtm

[zhujian7]

open the informational mode for new code checking, so reviewers can know which new lines are not covered, and it also will not block the PR merge. https://docs.codecov.com/docs/commit-status#informational

cc @qiujian16 @xuezhaojun @clyang82

[xuezhaojun]

/lgtm