make bypass idempotent

[weli-l]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes: Fixes #637

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 64.28571% with 5 lines in your changes missing coverage. Please review.

Project coverage is 51.67%. Comparing base (b60c13c) to head (f62f5fa). Report is 15 commits behind head on main.

Files	Patch %	Lines
pkg/controller/bypass/bypass_controller.go	16.66%	5 Missing :warning:

Files	Coverage Δ
pkg/controller/manage/manage_controller.go	54.46% <100.00%> (-0.80%)	:arrow_down:
pkg/kube/informer.go	100.00% <100.00%> (ø)
pkg/utils/exec.go	0.00% <ø> (ø)
pkg/controller/bypass/bypass_controller.go	34.09% <16.66%> (-4.99%)	:arrow_down:

... and 2 files with indirect coverage changes

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[kmesh-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hzxuzhonghu

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kmesh-net/kmesh/blob/main/OWNERS)~~ [hzxuzhonghu] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment